More about seamless pipe sizes

Seamless Piping are popular in everywhere, commercial buildings, industrial plants and even homes. They have a large range of sizes and can be seen to occur in several forms. With such

an extensive range of use for the products, it is quite beneficial to the suppliers as they have a constant demand. When they are used in the different kinds of constructions, it becomes imperative to have the right kind of material used to build them. Instead of that, it is better to use the products from reputed manufacturers. 

Basic information about tubes There are no right and wrong materials for the piping among the commonly used products. The major difference comes from the use they are put into. When the right material is used for a wrong process, it could be a disaster. ASTM A53, A106, A179, A500 and A501 are some of the popular standards which are used in the manufacture of the seamless pipes made from carbon steel. 

The advantages of galvanized pipe fittings

What’s galvanized pipe fitting? Well, generally, it is an iron or steel sheet fittings with a zinc coating to prevent corrosion and rust. When comes to galvanized steel pipes, fittings and other structures, strong and desirable in different situations. We can find a lot of advantages in pipes and fittings. 

Long life is the first advantage for galvanized steel pipe, fittings are known for their long life.

1. High quality, anti-corrosion & rust.

2. Easy inspection is another added advantage of taking the adoption of galvanized and fittings. You can see the production date. The inspection process is extremely simple and straightforward. 

3. Fast assembly is also another added advantage of such pipes and fittings. Good quality steel needs to be treated right. There are various benefits and advantages of Galvanized pipe fittings.

SHINESTAR attended the Canton Fair in 2016

In April, SHINESTAR has attended the Chinese largest Exhibition, the Canton Fair ( also named The China Impor & Export Fair) in April 2016. In this year, SHINESTAR has present the high quality scaffolding products in front of clients all over the world. As the largest scaffolding pipe manufacturer, we have been the most competitive scaffold pipe exporter in China. Our scaffold pipes are manufactured directly from our invested factories in Tianjin. Meanwhile,we are able to process hot dipped galvanizing, anti-oxidant painting for the scaffolding pipe. The coating process present high anti-corrsion resistance which protects the pipes from water. In general, different application requires different types of construction scaffolding. Currently, scaffold pipe is widely used for structure support. The advantages including large carring capacity, easy assembly and disassembly, flexible erection, and it has lower price. 

Quality Problems of LSAW Steel Pipe

In the LSAW steel pipe production process, because the primary process is in a hot state, so the heating operation is resolution product quality is very important process.

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The heat with the furnace, according to their results, and reheating furnace is divided into two kinds; the former is used to billet heated from room temperature to the processing temperature; the latter is used in the process in the blank reheated to the required processing temperature.

Heating will be wrong in the outer surface of the tube surface may exhibit cracks, folds and migraine pain and other waste reason.

Furnace There are many ways, but the primary use is a ring furnace. This furnace has an annular hearth, it can slowly change the direction of the diameter of the blank along the bottom of the load from the entrance, a reversal can be used at the outlet of the heating and soaking temperature to the rule kind of stove. This operation is the key blank is heated uniformly heated to a temperature suitable for processing. Because a great impact on the quality of the perforation, that is, when the temperature of the process piercing is an important condition affecting the quality, it is generally the temperature of the billet piercing working is to manipulate.

Chinese Welded Pipe Market Sluggish

Welded pipe price are temporarly stable in most Chinese cities, while the market remains sluggish without strong downstream demand.The mainstream price of welded price Q235 φ114*3.75mm ranges from RMB 2,300/t (USD350/t) to RMB 2,550/t (USD 388/t) in major domestic markets for the time being. Insiders predict that CHinese welded pripe market will remain sluggish for some time.

A welded pipe trader in Tianjin relvealed that the price of welded pipe Q235 φ114*3.75mm from Youfa Steel is RMB 2.300/t (USD 350/t), stable compared with that of the previous trading day.

The source told Asian Metal that local market prices have kept stable in recent two days, while they have decreased by RMB100/t(USD 15/t) totally since the beginning of last week , as a result of the weak downstream demand. According to him, his current sales volume is only 100tpd against 150-200tpd in the early of May. He has an inventory of 4,000 for the time being and has no confidence in the welded pipe market outlook.

Another welded pipe trader in Wuhan, Hubei province reported that the price of welded pipe Q235 φ114*3.75mm from Huaqi Steel RMB2,400/t (USD 365/t), similar to that of the previous trading day. 

The source disclosed to Asian Metal that the welded pipe market hasn't shown any improvement since the early of May and the current downstream demand is much weaker than it was during March and April. He reported a sales volume of 3,000t in May, While it was 4,000-5,000t in April. Holding a stockpile of 5,000t, He prefers to hold a cautious attitude towards the forthcoming market.

A welded pipe trader in Foshan, Guangdong province disclosed to Asian Metal that the current price for Q235 φ114*3.75mm from local producers is RMB2,630/ (USD 400/t), stable compared with that of last trading day. 

The source pointed out that most end users are inactive in placing orders now and his current sales volume is only 150-200tpd against 300tpd in April. According to him, though local welded pipe prices are temporarily unchanged, he worries that they are very likely to go down again in the near future considering the insufficient downstream demand. He has a regular inventory of 5,000t and will keep a keen eye on the forthcoming market.

Line Pipe Production Status in China

1. Production Process

Welded line pipe can be distinguished into three production process which are resistance welding, spiral submerged arc welding, longitudinal submerged arc welding. These three types of line pipe are applied in different fields according to the raw materials, molding, aperture size and quality varies. 

2. Straight seam electric resistance welded pipe (ERW Steel Pipe)

ERW steel pipe is a type of welded piep has widest range of applications, most production units (more than 2,000), highest production yield (about 80% of the total capacity of the steel pipe production quantity) and the earliest production line invested in China. In China, the production size of ERW steel pipe ranges from 20mm to 610mm which played a large role in the national economy construction. Since the 1980s, about 30 sets of the ERW steel pipe production units 219mm - 610mm units are imported from oversea advanced technology. After years of production pratice, the technology and equipment level have been achieve a great progress, and the product quality is improving. Because of the less improvement, quick wide range of applications and rapid development, in the future, the development of ERW steel pipe prodcution will  focus on producing low cost and reliable products. 

2. Spiral submerged arc welded pipes (SSAW steel pipe)

SSAW steel pipe requires less investment in equipment, low prices for raw materials to produce large diamter pipe, simple production process, low running costs. In China, the oil and gas transportation spiral welded pie has formed a steel plant-based oil system belongs basic format. Low residual stress and tube end forming machinery and expanding other advanced technology, strict quality control through the spiral welded pipe in the quality can be comparable with the Longitudinal. 

3. Longitudinal submerged arc welded pipe (LSAW steel pipe)

About the LSAW steel pipe production process, in the past we mainly use UOE technology. However, in the recent years progressive, JOCE technology is becoming the new mainstream technology for producing LSAW steel pipe. Compared with other welded pipe production process, the LSAW steel pipe production units require relatively large investment, higher cost of raw materials, more complex process, low productivity and high production cost. Because of the high pressure oil and gas pipeline requires large diameter 1 million tons every year. Regardless of the spiral welded pipe, LSAW steel pipe will complement the spiral welded pipe uncovered specifications. 

Line Pipe

In modern society, line pipe is belong to low or ultra low carbon steel pipe with micro-alloyed. Line pipe is a type of high tech and high value added products which is all applied in the areas of metallurgy technology nearly 20 years of new achievements. The development trend of pipeline project is applying large diameter, high pressure, high cold and corrosive, thick wall line pipe. Therefore, in modern society, line pipe should have a high strength, low bauschinger effect, high toughness and resistance, brittle fracture, low carbon volume and good weldability properties. Meanwhile, line pipe has high resistance to HIC and anti-H2S corrosion features is necessary. The optimized production strategies is to improve the steel cleanliness and organizations uniformity, C≤0.09%, S≤0.005%, P≤0.01%, O≤0.002%, and to take micro-alloying, vacuum degassing + CaSi, the continuous casting process under light pressure, multi-stage thermomechanical rolling and accelerated cooling versatile batch process. Domestic and international pipeline specification does pipelines toughness index of steel, pipe only to specific requirements:

(1) Minimum temperature (-5 ℃) DWTT≥85% SA;

(2) the lowest temperature (-5 ℃) Charpy impact energy ≥145J.

Pipeline Technical conditions commonly used by the American Petroleum Institute standards APISpec5L, but the domestic user's specific projects or specific orders and technical conditions are often much more stringent than the API standard.

Smelting technology with more stringent requirements, technical difficulties focused on:

1) content of impurity elements control;

2) inclusion control;

3) a narrow composition control.

Global Per-capital Steel Consumption Declined

The World Steel Association has released the annual statistics in 2015, the data showed that the global per capital cosumption of finished steel products has declined in second year. It down to 208.2 kg compared with last year's decrease. In Aisa, China's per capita steel consumption fell sharply in last year, it from 519.0kg in 2014 fell to 488.6kg which is down 5.9%. Compared with 2013 which has achieved a peak of 539.5kg fell 9.4% today. However, the data in 2015 is still higher than the data in 2012. Meanwhile, the per capita steel consumption in Japan and Tiwan have also declined, the data in 2015 has create the lowest data in the past five years. In India and Korea, the consumtion is keep increasing, specially in India, the per capita consumtion for steel products has break Indian record. Moreover, South Korea continue to maintain the world's highest per capita steel consumption status which has achieve to 1113.6 kg in 2015, but still below the 2008 record of 1207.4 kg peak level.

In Americas, North and South America per capita steel consumtion volume has declined in 2015. The United States, Canada and Brazil have fell which is seperately reduced to 297.4kg, 404.6kg, and 102.6kg. In Mexico and Argentina, the data is maintain to growth, and relatively rose to 190.6kg, 121.0kg. In the CIS last year, per capita steel consumption in the region is 190.0kg, a low record since 2009 which including Russia reached a new low level as 274.6kg, and Ukraine continued to decline to 74.7kg.

In the EU, the per capita steel consumtion in 2015 has reached 303.5kg which reached a consecutive three years growth, but still lower than the historical peak level of 311.6kg in 2011. Germany, France, Britain and other countries has declined, but Italy, Spain and Poland is growing.Czech Republic remains the highest per capita steel consumption in the EU countries reached 627.4 kg, only slightly below the 2007 peak of 635.8 kg. In other European countries, Turkey's per capita steel consumption increased significantly last year, reaching 436.8 kilograms, a new record high.

Although Africa last year for five consecutive years to maintain growth, reaching 33.1 kg, but still the world's lowest per capita steel consumption in the region. Per capita steel consumption in the Middle East last year fell from 232.0 kg 225.4 kg, the highest six-year low.

Line Pipe Consumption Report in China

Line Pipe is mainly used for manufacturing oil and gas transmission pipelines. Oil and gas pipelines is most convenient and safest lines connecting the resource area and the market consumption area. The construction of oil and gas transmission pipeline will not only ease the railway transportation pressure and also help to protect the security of supplying oil and gas to the market. Most importantly, it help to improve the energy security capacity in China. 

We also imported liquid natural gas (LNG) from Russia and the Central Asian Coutries. In order

to deliver these natural gas to the main consumption areas, construction the transmission pipeline is essential. Today, the West-East Pipeline Project has been completed, in the future, China will construct Shaanxi-Beijing, the Sino-Russian natural gas pipeline (East, West Line), as well as Central Asia or Russia to Shanghai Natural Gas Pipeline and the ultimate "West-East Pipeline. 

In China, the crude oil, natural gas pipeline network have already been finished in a considerable scale, however, the refined oil pipeline is relatively cover 40%. Therefore, in the future, China plans to build 30,000 km pipeline which requires API 5L X65 pipe line with the outer diameter of 500mm and wall thickness below 10mm. In the next ten year, China will construct about 50,000 km of oil and gas pipelines, the average annual need for line pipe is nearly 5,000km. The annual requirements for steel pipeline for transmission natural gas is about 400 million tons.

With the develpment of pressure liquid pipeline deliery, oil and gas transmission line pipe is corresponding to the rapid development of high grade direction. In the internatioanl developed countries, API 5L X52 line pipe is widely used in 1960s, API 5L X60-X65 line pipe is commonly used for oil and gas transmission. However, in recent years, API 5L X70 line pipe is occupied th main market for oil and gas pipeline construction. In China, the most widely used line pipe is API 5L X52, X65, X70 line pipe with the outer diameter ranges from 1016mm to 1219mm, and the pressure rate is 10MPa. 

Why is the galvanized steel pipe better than other pipe?

When we talk about the galvanized steel pipes, we usually refer to the hot dipped galvanized steels pipes which are more durable and strengthened than any other types. The cleaning process which the hot dipped galvanized steel pipe uses is far more special in the combination use of the solutions, including the ammonium chloride, zinc chloride or the mixed solutions of both. And it will be sent into the hot dipped groove afterwards. The galvanized steel tube will be with more even layer of the galvanization and the capacity of cohesion, anti-corrosion and anti-dust. All of these as mentioned above will contribute to this kind of steel pipe to be have longer longevity than any other steel pipe kinds.

To maintain these galvanized steel tubes, we should keep in mind about these following steps:

1. Regular clean away the piling-up materials around the steel and control its loading under its limitation.

2. Regular observe if there is any deviation among the steel tube's whole structure of parts of it. If yes, make alteration in time.

Shinestar Visiting Customers In UAE And Distributing Market In The Middle East

The Middle East is famous for the rich oil resources all over the world, oil pipeline and other oil equipment are a huge demand for the Oil production and transportation, so the Middle East is the main market of many oil equipment export companies. In order to cooperate with the global strategic and the development of the Middle East market, Shinestar Holding Group has set up an office in Dubai JUMEIRAH mart at present, and start a journey to visit the customer in United Arab Emirates. It was highly effective for the visit, and has paved the way for understanding and layout the market in the Middle East.

The United Arab Emirates customers are mainly concentrated in two emirates, Dubai and Abu Dhabi.As we know, Dubai is a financial and trade center in the Middle East, brought together hundreds of pipeline equipment and other steel products company;As the capital of the United Arab Emirates, Abu Dhabi is also a large number of oil companies.

There is some large pipeline and offshore equipment  stock traders in Dubai.The strength and the operation of JEBEL ALI FREE ZONE and so on is very outstanding in the industry. Shinestar visited the OFFSHORE INTERNATIONAL ENGINEERING & MARKETING LTD, AGE GROUP, TECHNO HARD OILFIELDEQUIPMENT, KIRTANLAL INTERNATIONAL DMCC, MRC GLOBAL, JSS PIPE FITTING and other companies, including OFFSHORE INTERNATIONAL ENGINEERING & MARKETING LTD and KIRTANLAL INTERNATIONAL DMCC is most prominent. The two companies are large stock traders of  professional oil pipes, pipe fittings and pipe equipment , they have big demand in  domestic . They mainly demand seamless steel pipe and casing.  

Customer visit to Abu Dhabi industrial zone, kaddas oilfield services &trading company, gulf piping co are particular, The two companies' size and strength significantly, they are professional oil pipeline stock traders, China is one of their main importing countries, their products are mainly used in the Middle East and other countries oil projects.

Shinestar opened overseas trip to visit customers, mainly want to through the face-to-face communication with the customers and visit, learn about the local market demand form, product use and purchase channels, at the same time also to learn more about customers' most honest feedback to Shinestar products and services.

The president of Shinestar Mr.Yi guoyu said,“It is a long trip to develop international market, which need persistent patience and commitment.”In the face of customers don't know and not familiar with, Shinestar people with the spirit of perseverance and unwavering faith, continued in the overseas market development, efforts finally rewarded.

So far, Shinestar Group has been known more of Middle East market by several visits to customers. Customers from United Arab Emirates basically belong to traders and most of the products rely on imports.It is because that Dubai is the trade center of Middle East area, and a large number of local traders and stock traders are created. And local customers pay more attenti to the suppliers qualification and the corresponding engineering cases. All of these provide a reliable basis for making the decision on layout the Middle East market.

Shinestar starts to visit overseas customer one year ago,in the later,the visiting journey will be covered  Africa and South America for maintain the existing local customers and explore new needs of customers.The Group will rely on the most advantageous price, the best service and the most comprehensive products to impress customers, and expand the brand influence on  these two distant lands.

As the president of Shinestar Mr. Yi Guoyu said, “God helps those who help themselves.People always get what they paid. Sales should seize the chance to show  their sincere to get the trust of customer, to offer high-quality product and best service to convince customer that Shinestar is great.”Also it is true portrayal of Shinestar sales in the oversea market development.

The Craft of manufacturing the SMLS Steel Pipe

The first step to make the seamless steel pipes is generally started with a hot extrusion to form the tube hollows from billets which has typically a drilled hole and is pushed through a die and over a mandrel with the process of air cooling or water quenching afterwards. The seamless

steel pipe wall thickness is defined by the gap between the piercing ram and the extrusion die. It is difficult to control the wall thickness uniformity and it is difficult to achieve good finish quality. The surface of the extrusion billet is initially machined in order to remove any surface defects otherwise it will exert a bad effect on the surface quality of the finished product. If there is any need to further reduce the tube hollows down to a required size, use the pilgering to finalize the finish and size of the tubes. Cold work improves the mechanical properties and tolerances. Cold pilger is the preferred production process since this technique provides a high forming rate, narrow tolerances and good productivity yields. In general seamless steel tubes receive some type of finishing treatment and heat treatment after completion of the manufacturing process and all piping shall be supplied in the heat treated condition. 

The Uses of Scaffolding

Scaffolding, also called scaffold or staging, is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other man made structures. 

Scaffolding belongs to a temporary structure used to support people and material in the construction or repair of buildings and other large structures. The construction and renovation industry.  Painters, window washers, and construction workers who deal with multi-story structures. Scaffolding is most often used for creating a working platform for either building or maintaining structures, but because it is so adaptable, it can be used for a variety of purposes, including: Maintaining the exterior of an existing structure eg. painting. Providing working platforms for workers building a structure. Stair towers for access to other raised platforms such as flat roofs. Suspended platforms, cradles or hanging platforms eg. for bridge maintenance. Platforms on uneven ground for stages or marquees. Stabilising or shoring a structure or tall object to keep it vertical. Temporary roofs. Temporary ring lock scaffolding walkways. Temporary bridges. Temporary buildings eg. storage sheds. River bank or lake-side reinforcement. Ramps. Sign-boards frames and advertising hoardings. Bracing structural props. Racking and storage bays. Hand-rails and edge protection. Masts for aerial. Stage sets for television, film and theatre.

China's steel exports forcast

Since April 25, the domestic steel market price fall, the ordinary steel price index fell more than 20 points, and part of steel products price has an decline rate over 30%. In the Chinese steel pipe market, both seamless steel pipe and welded steel pipe suffer a large price decrease. In generall, there will be three different prices in one day. The main logic behind the price decline is large profit margins stimulate the resumption of steel products production which led to the expansion conflict between steel supply and demand. When the market price goes down, steel products exporting is one way to relieve the domestic market pressure. Therefore, the market believe that the domestic market steel supply in May 2016 is getting better and better. In fact, themajority of steel prouduction enterprises and large steel products traders ahve such a feeling that the domestic steel export deliveries and new orders  volume performance is good in May. According to the Shanghai Steel Investigation Team Data, Chinese steel export is more than 9.5 million tons with a sequential growth rate in 5%.

In June 2016, the domestic steel exports may be affected. Chinese steel market in Europe and America is suffering from s severe "anti-dumping, countervailing" survey. Chinese steel exports to Europe and America are suppressed. The strong demand for steel consumption in Southeast Asia for the Chinese steel exports contributed a lot of power. Chinese steel export growth is very dependent on the Southeast Asian region. The changes in the Southease Asian market will largely affect the export quantity of  Chinese steel. June is the rainy season in Southeast Asia market, the rainy season will definitely affect the start of the construction site, which would weaken the steel consumption. In addition, the lslamic holy month of Ramadan will begin in June which will also affect the local steel consumtion. Therefore, we believe that in June Chinese steel exports will be affected the Chinese steel export in some degree, but in a limited impact strength.

Anti-corrosion Steel Pipe - Internal Coating

Internal coating systems for steel pipes using epoxy-based liquid paints, including Novolac, accompanying market trends. The principal uses of these coatings are:

1. To improve the flow of liquids by reducing the roughness of the pipes’ inner surfaces, in the case of Flow Coating.
2. To provide anticorrosive protection, in cases in which bicomponent epoxy  coatings, 100% solid epoxys and Novolac coatings are applied

The internal surface of the pipe is cleaned previously. After cleaning, the epoxy paint is applied to the pipe’s inner surface through an  airless guns system, forming a uniform layer that cures in the open air. The typical thickness for the internal coating system varies between 60 and 100μm for gas transportation pipelines and between 200 and 500μm for pipes designed to conduct water or other liquids.
The internal coating unit is equipped to coat pipes with a nominal diameter ranging from 4” to 48” and lengths ranging from 8m to 13m.