API line pipe factory production specifications

This is steel pipe for pipeline transportation systems in the petroleum and natural gas  industries.  API 5L is suitable for conveying gas, water, and oil.  Size range is limited  only by manufacturer’s capabilities.

API line pipe factory production specifications adhere to the International Organization for  Standardization ISO 3183, which standardizes pipeline transportation systems within the  materials, equipment and offshore structures for petroleum, petrochemical, and natural gas  industries.  The technical committee authoring the standards recognized that there are two  basic Product Specifications Levels (PSL) of technical requirements and therefore developed  PSL 1 and PSL 2.  PSL 1 is a standard quality for line pipe where PSL 2 contains additional  chemical, mechanical properties, and testing requirements. 

Grades covered by this specification are A25 ,A ,B (and the following "X" Grades), X42,  X46, X52, X56, X60, X65, X70, X80.  The two digit number following the "X" indicates the  Minimum Yield Strength (in 000's psi) of pipe produced to this grade.

China to curb fast growing steel prices

The Chinese government is encouraging steel companies to sign long-term contracts with coal and downstream steel consuming companies while improving their product quality.

The measure, set out in a document issued by five ministry-level bodies, is aimed at stabilizing recently fast growing steel prices and further cutting the industry’s overcapacity.

The document, jointly released by National Development and Reform Commission and other four ministries, said that although progress had already been made to cut overcapacity in the steel industry in recent months, the elimination of outdated capacity remains a major challenge.

Despite the rapid rise of spot and future prices for steel in the short term and the recent recovery in output and sales performance of steel companies, companies should carry out further efforts to reduce capacity to support economic growth, as the country’s oversupplied steel sector has experienced years of plunging prices and factory shutdowns due to a sluggish economy, it said.

Analysts said despite the surge in steel price since the beginning of this year, the API line pipe manufacturer supply-demand situation has not changed and the government document aims to stabilize the market and prevent steel price from overheating and disproportionately rising.

According to Wang Guoqing, director of the Lange Steel Information Center, despite the surging steel prices, steel inventories remain high.

Figures from the center released that the total inventory of steel in 29 major cities in China exceeded 12.39 million metric tons as of Feb 10, a 35 percent increase compared with three weeks ago, surpassing the peak of 2016.

The construction steel saw the biggest growth, more than 8.31 million tons as of Feb 10, 50.8 percent higher than three weeks ago, it said.

The government needs to ensure that cutting overcapacity proceeds as planned, he said.

According to Huatai Futures, considering the current stable increase in steel output and off-season demand, the inventory for steel in 2017 is believed to exceed 18 million tons, the highest of the past three years.

China’s crude steel output rose slightly last year, with crude steel production increased 1.2 percent year on year to 808.37 million tons in 2016, compared with a 2.3 percent decrease in 2015, according to the National Development and Reform Commission

China plans to reduce steel output by an additional 100 million tons to 150 million tons by 2020. Its 2016 target to cut 45 million tons was achieved ahead of schedule.

China will enact stricter rules for trimming steel overcapacity in 2017 after making significant progress in 2016, according to experts.

What is the cause of China's steel exports fell 20%?

Continuation of the end of 2016 China's steel exports decline momentum, China's steel exports in January 2017, continues to decline.Shinestar Steel Research Institute  believes that in recent years, the important factors influencing the Chinese steel exports mainly trade litigation.As a main force in the international steel market,  Shinestar Group production of galvanized pipe, piling pipe, SSAW steel pipe, seamless steel pipe, seamless stainless tube, welded pipe and other products are exported  to Europe, Australia, Africa, North America and other more than and 100 countries and regions, so Shinestar Group has been paying close attention to China's steel  exports.

According to statistics, 2016 1-12 months.China's steel exports suffered from 20 countries and regions of 48 trade remedy investigation,the anti-dumping case 32 cases,  anti-subsidy case 9 cases, safeguards case 7 cases;Compared with 2015, the national increase in the number 6;Caseload rose by 29.7%.

When the start of 2017, a new round of trade disputes are approaching Chinese steel exporters.In addition,  the U.S. Department of Commerce announced on Thursday   finally decided that Chinese imports of stainless steel plate and stainless steel belt get subsidies, and being dumped at below reasonable prices in the us market.Which  are a step closer to impose tariffs on these products.Obviously, there is a widespread of foreign steel products to China anti-dumping and countervailing investigation  and punitive tariff restricts the space of China's steel exports.

However, Shinestar Steel Research Institute believes that the January 2017 decline in steel exports also have a large part of the reason is because the domestic steel  consumption is better than expected, so the foreign trade price upside down caused by steel.At present, the domestic spot sales profit is high, during the Spring  Festival, billet prices locking in 2810 yuan/ton.Look from the current cost line, steel billet manufacturers remained certain profit space, most of the big difference of billet  and the finished product, the overall profit is considerable.In contrast, the international market price is competitive.

Then another major factor in the decline in export volume from the previous year optimistic about the market outlook, which led to an increase in social stocks.According  to the latest research data, the beginning of the new year chicken, the country's five major varieties of steel mills and social inventory reached a total value of 21 million  105 thousand tons, an increase of 23.9%, compared with the previous growth of 30.7%.Therefore, the holiday effect in the same steel exports decline in January plays  an important role.Before and after the Spring Festival, the exporter to price prospects feel uncertain, orders will drop, buyer also want to such as prices, so the wait- and-see mood is strong in the market.

As a service based on Chinese, global steel production enterprises, shinestar group will seize opportunities, meet challenges, and strive to produce more high-quality  galvanized pipe, piling pipe, SSAW steel pipe, seamless steel pipe, seamless stainless tube, welded pipe and API line pipe manufacturer, discrimination against the behavior of the China steel products say "no".

Classifications of Welded Steel Pipe

Classifications of Welded Steel Pipe

Welded steel pipe is shaped up by crimping steel plate or steel belt and then it was made after welding. Welded steel pipe can be classified into longitudinally-welded pipe and spiral welded steel pipe according to the ways of welding. The common forming technique of longitudinally-welded pipe is UOE forming process and JCOE steel pipe forming process. According to the application, welded steel pipe is classified into general welded pipe, galvanized welded pipe, oxygen blast welded pipe, electric wire conduit, metric welded pipe, roller tube, deep well pump pipe, automobile tube, transformer tube, electric welding thin walled pipe, electric soldering special pipe and spiral welded pipe.

General welded steel pipe fabricated by Steel Q195A, Q215A, and Q235A is used for conveying low-pressure fluid. It also can be manufactured by other mild rolled steel for easier welding. Steel pipe should be conducted some experiments such as hydraulic pressure, bending, battering and so on and so forth. Production manufacturers can do a more advanced detection for steel pipe in terms of their own conditions. Welded steel pipe usually has certain requirements for surface quality. The delivery length is usually four to ten meters. Moreover, manufacturers can deliver the goods by sizing or ruler-multiplying according to actual production requirements. The specification of welded pipe in nominal diameter express nominal diameter is different from the actual nominal diameter. According to the regulations of the length of wall thickness, welded pipe has two kinds: thin-wall steel tube and thick-wall steel tube. Steel pipe also has two kinds: thread steel pipe and steel pipe without thread according to pipe ends.

For the price of welded steel pipe is lower than that of south seamless pipe which has the same specifications, welded steel pipe is widely used in low-pressure fluid transmission engineering, steel structure engineering, etc.

API line pipe manufacturer

API line pipe manufacturer

API 5L line pipe according to the production process is divided into the submerged arc welding steel pipe, etc. 8. But the main use of Seamless steel tube (Seamless), high frequency straight seam Resistance Welding steel pipe (Electric - to hold the Arc Welding, shorthand for ERW), straight seam Submerged Arc Welding pipe (Longigudinally Submerged Arc Welding, shorthand for LSAW), spiral seam Submerged Arc Welding pipe, Spirally Submerged Arc Welding, shorthand for SSAW), etc.

Straight seam submerged arc welding pipe press forming method is divided into UO (UOE), RB (RBE), JCO (JCOE), etc. The steel plate in forming mould pressing U first, then pressed into an o-ring, and then evaluated for submerged arc welding, after welding are usually at the end or span range (Expanding) called the UOE welded pipe, hole diameter is not called UO of hole diameter welded pipe. The steel plate roller bend forming (Roll Bending), and then evaluated for submerged arc welding, after welding for RBE hole diameter welded pipe or not for hole enlargement RB welded pipe. Will the steel plate according to the order of type J - C - O forming, hole enlargement of JCOE welded pipe after welding or not for hole enlargement JCO welded pipe. Of the LSAW welded pipe is a widespread use of UOE. High frequency electric resistance welded pipe ERW mainly by high frequency current skin effect and proximity effect melted the tube embryo edge, then under the action of squeezing roller pressure welding, its characteristic is no foreign filler metal, heat affected zone is small, high production efficiency. Spiral welded pipe used in long distance line SSAW pipe has a long history, is our country at present mainly adopts the line pipe.

APISPEC5L pipeline standards:

API SPEC 5 l, the American petroleum institute standards

The national standard GB/T9711 - China

API line pipe manufacturer

API line pipe manufacturer
Galvanized pipe using sulfate electroplating of zinc-iron alloy technology, is the production line between the slot and slot are perforated without any solution out or overflow. The production process of the process consists of the circulatory system, the tank solution that acid-base liquid, electroplating solution, the light and passivation solution, only to not use the system to leak or discharge, the production line only 5 cleaning tank, Reuse of regular emissions, in particular, after the passivation is not washed without the production of waste water production process.