Galvanized Steel Pipes

Galvanized Steel Pipes Specification

Product Type: ASTM A106 Gr.B

Product Name: 10 inch STD astm a106 gr.b galvanized steel pipe

10 inch STD astm a106 gr.b galvanized steel pipe

size: 10 inch, DN250, 273mm galvanized ERW steel pipe

Material: ASTM A106, 20#, Q235, STPY41, STPG38, STB30, STB33, STB35, STPT42 etc

Wall Thickness: STD, 8.18mm

Standard: ASME/ANSI B26.10M

Type: astm a106 gr.b galvanized steel pipe

Size:

Seamless Pipe: 1/2”~24”, DN15~DN600, OD21.3MM~609.6MM, WT: 1-60mm

LSAW pipe: 1/2″-48″, DN15-DN1200, OD21.3-1219.2MM, WT: 1-60mm

SSAW pipe: 1/2″-48″, DN200-DN3600, OD: 219.1-3657.6mm, WT: 6-36mm

Wall thickness

SGP, STD, SCH40, SCH80, SCH160. XS, XXS and so on.

Standards

ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M—1996, DIN2605 / 2615 / 2616, JIS P2311/2312

Material

ASTM A106, A53GRB, A53-A, A106-A, A192, A226, A315-B, A106-B, A178-C, A210-A-1,

A210-C, A333-1.6, A334-1.6, A333-7.9, A334-7.9, 150M19, En46..

API 5L X42, X52, X60, X65, X70

Length: 6-12m

Industrial process

hot rolled, hot expanded, cold drawn, and hot galvanized

Surface treatment

Transparent oil, rust-proof black oil or hot galvanized

Galvanized Steel Pipes Usage

Water Pipelines, Agriculture and Irrigation (Water Mains, Sewerage Systems, Industrial Water Lines, Plant Piping, Deep Tube-Wells & Casing Pipes). Other popular application area includes usage in gas pipe lines (pipe lines for natural gas, LPG and other non-toxic gases).

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

Large diameter pipes

Large diameter pipes (Carbon Pipes) Specification

Large diameter, mill certified API linepipe from 323.9 mm outside diameter through to 1220 mm outside diameter in varying wall thicknesses. All stock to a minimum of 350 MPA physical yield stengths.

High Quality S.A.W Spiralweld Pipes

600mm – 3000mm Diameter.

Product Type: ASTM A106/A53 GR.B

Product Name: 14 inch LSAW Large diameter welded carbon steel pipe

14 inch LSAW Large diameter welded carbon steel pipes

size: 14 inch, DN350, 355.8mm LSAW Large diameter welded carbon steel pipes

Outer diameter: ASTM 355.8mm, DIN 355.6mm, JIS 355.6mm 14 inch steel pipe

Material: ASTM A106 GR.B, ASTM A53 GR.B, 20#, Q235, STPY41, STPG38, STB30, STB33, STB35, STPT42 etc

14 inch LSAW tube Large diameter welded carbon steel pipe

Standard: ASME B36.10M /ANSI B36.10M, API, GB, SH, HG, MSS, JIS, DIN etc

14 inch LSAW steel pipe Thickness: DIN 8mm, JIS 7.9mm, ASME 6.35, 7.92, 9.52, 11.1315.09, 12.70, 19.05, 23.83, 27.79, 31.75, 35.71mm

Thickness Tolerance: ±12.5%

Length: Min 3 Meters, Max12 Meters, or according to customer’s requirement

Ends: Beveled/Straight cut, Plastic or Metal ends protetcors

Coating: Black painting/Vanish painting 3PE coated etc

Marking: According to standard or according the customer’s requirement

Large diameter pipes (Carbon Pipes) Usage

Fluid, boiler, hydraulic, gas, oil, chemical fertilizer, structure pipes etc.

For low pressure liquid delivery such as water, gas and oil Alpine zone, the sea, the city densely populated areas.

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

How to Clean a Steel Pipe

Cleaning the inside of the steel pipe

Run after through the inside of the pipe. This can be done in a sink if the pipes is small enough. Use a water hose outside if the pipe is too big to fit in the sink. Tilt and twist the pipe. While the water is running, tilt it so the water run against the inside of the pipe. Twist the pipe so the water cleans off the sides of the pope, use a scrub brush saturated with soapy water to scrub the inside of the pope. If the pipe is too narrow to fit your hand though, use a baby bottle brush to clean the inside, Rinse the pipe with clean water and allow to dry. 

Cleaning the outside of the steel pipe

Saturate a soft cloth with distilled white vinegar and wipe the outside of the pipe with the cloth. Rinse the outside of the pipe with warm soapy water. Soak paper towels in baby oil and clean the outside of the pipe with them.  The baby oil will make the pipe shine like new. Spray a water displacing formula onto a cloth and wipe the pipe down. The water displacing formula will not only clean the pipe, but it will also in protecting the pipe from future marks.

Polishing the steel pipe

Apply a small amount of metal polish to a microfiber rag. Rub the microfiber rag gently across the surface of the pipe to distribute the polish evenly. Make sure the polish does not get too much thick on the pipe. Rub the surface of the pipe gently with a clean microfiber cloth to work off any excess polish. Buff the surface of the pipe and allow to dry.

Cold- draw Steel Pipe Production Process

The cold- draw steel pipe production process:

The cold-draw steel pipe production process involves combining cold-rolled and cold-draw

processes in the production process. The advantage of cold-rolled uses simple equipment, has a low cost, and easy operation and maintenance, but has many working procedures and produces low yield. Using cold-draw process requires more complex equipment and more investment, but has a simple procedure and high yield. Especially for high-precision seamless steel tubes and thin-walled seamless tubes.

Due to the limited count and cost of a rolling mill, the finished product specification is less. The product produced with cold-rolled and cold-draw have many advantages: high quality, short processing cycle time, reduced intermediate degreasing, heat treatment, faint, favoring straight processes, saves energy, reduces metal consumption, has less raw material specifications and so on.

For tube pickling can use sulfuric acid, hydrochloric acid, mixed acid, hydrofluoric acid. Carbon structural steel and alloy seamless steel pipe better to use sulfuric acid, high-quality carbon structural steel and alloy steel precision seamless suitably hydrochloric acid, high chromium Cr and Ni Ni high-alloy seamless steel pipe preferably sulfuric acid, hydrochloric acid, nitric acid and mixed acid wash, austenitic stainless steel tube is appropriate to hydrofluoric acid.

API 5L Steel Pipe Delivery

As we all know, the handling of round welded pipes is very important job, because will be many and many times of transfer during the whole production process, so even little damage of pipe surface of beveling will lead to the final big damage to pipes.

Steel pipe delivery 1 - In stack

Steel pipe delivery 2 - End protection

Put plastic end caps or steel end protector to our pipes ends to avoid damage of pipe beveling.

Steel pipe delivery 3 - Loading and shipping

Using the bridge crane to carry your APL 5L Line pipe, and load mild pipe into long trucks whenever you need pipes. As we mention above, we will apply standard handling procedure to protect all your line pipe. Besides, strict practice of pipe carrying also ensure the safety of our workers.

The Difference between the Elbow and the Elbow Pipe

The elbow and the elbow pipe basic difference is the elbow shorter. R=1 or 2 times is the elbow, then big multiples is the elbow pipe. The cold bend pipe can be bend by straight pipe,

finished with one procedure, not need to do secondary corrosion in the production.  However, the production process of the elbow is much complicated compare to the elbow pipe.  It is manufacturers custom-made, corrosion, which means it has long order cycle. The cost efficient of the elbow higher than the elbow pipe and the price is much higher too. It is know to people that the elbow pipe easily damaged due to no corrosion prevention. because inexpensive so that it is widely used in the project that not have high demands. 

Construction technology of the cold bend pipe has a oil standard, West-East natural gas transmission project have its enterprise standard. Both are good at plain area, considering the cost, the elbow pipe is better. But the elbow is must at narrow sector , like stonework trench segment . The curvature semidiameter of the elbow are small , usually 6D, and the the elbow pipe is 40D.

DIN ERW steel pipes

DIN ERW Steel Pipes Specification

Product Type: ASTM A53 GR.B steel pipe

Product Name: DIN 8 inch XS ERW ASTM A53 GR.B steel pipe

DIN 8 inch XS ERW ASTM A53 GR.B steel pipe

size: 8 inch, DN200,219.1mm ERW ASTM A53 GR.B steel pipe

Material: ASTM A53,20#,Q235,STPY41,STPG38,STB30,STB33,STB35,STPT42 etc

Wall Thickness: XS,12.70mm

Certificate: ISO 9001,SGS,BV etc.

Capacity: 2000tons/month

DIN 8 inch XS ERW ASTM A53 GR.B steel pipe

Welding process: Electric arc welding tube, High frequency electric resistance welded carbon steel pipe

Length Fixed: 3.0,5.8,5.85,5.9,6.0,11.8,12.0m.

Random length: 5-12m

DIN 8 inch XS ERW ASTM A53 GR.B steel pipe

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

What is Seam Pipe

Seam pipe refers to the strip or plate bending round, square and other shapes and then welded into the surface jointed pipe. Slotted pipe with blank steel plates or steel strip.

With the development of high-quality steel rolling production as well as the rapid development of welding and inspection techniques, and improved quality of welds,

pipe has increasing varieties and specifications, and take the place of seamless steel pipe in some areas. Compare to seamless steel pipe, seam pipe have some advantages, less cost, high production and efficiency.

According to different welding methods, can be divided arc welded pipe, high-frequency or low frequency electric resistance welded pipe, gas pipe, stove pipe, Bundy tubes.

According to seam shape, can be divided into longitudinal and spiral welded pipe.

According to the end-use, can be divided in to general welded pipe, galvanized pipe, oxygen blowing pipe, wire casing, metric pipe, roller tube, deep well pump tube, automotive tube, transformer tube, welding thin-walled tube, welding shaped tube and spiral welded pipe.

According to the end of the shape,  can be divided into circular pipe and shaped (square, flat, etc.) pipe.

We are manufacturer of Seam Steel Pipes and supply high quality Seam Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

Five Different Heat Treatment Technique

Heat treatment is the process of heating and cooling metals to achieve desired physical and mechanical properties through modification of their crystalline structure. The temperature, length of time, and rate of cooling after heat treatment will all impact properties dramatically. The most common reasons to heat treat include increasing strenght or hardness, increasing toughness, improving ductility and maximizing corrosion resistance.

1. Annealing

Annealing is a rather generalized term. Annealing consists of heating a metal to a specific temperature and then cooling at a rate that will produce a refined microstructure. The rate of colling is generally slow. Annealing is most often used to soften a metal for cold working, to improve machinability, or to enhance properties like electrical conductivity.

2. Normalizing

Normalizing is a technique used to provide uniformity in grain size and composition throughout an alloy. The term is often used for ferrous alloys that have been austenitized and then cooled in open air. Normalizing not only produces pearlite, but also bainited sometimes martensite, which gives harder and stronger steel , but with less ductility for the same composition than full annealing. 

3. Stress relieving

Stress relieving is a technique to remove or reduce the internal stresses created in a metal. These stresses may be caused in a number of ways, ranging from cold working to non-uniform cooling. Stress relieving is usually accomplished by heating a metal below the lower critical temperature and then cooling uniformly. 

4.Quenching

Quenching is a process of cooling a metal at a rapid rate. This is most often done to produce a martensite transformation. In ferrous alloys, this will often produce a harder metal, while non-ferrous alloys will usually become softer than normal. 

5. Tempering

Untempered martensitic steel, while very hard, is too brittle to be useful for most applications. A method for alleviation this problem is called tempering. Most applications require that quenched part be tempered. Tempering consists of heating steel below the lower critical temperature,  (often from 400 to 1105° F or 205 to 595°C, depending on the desired results), to impart some toughness. Higher tempering temperatures are sometimes used to impart further ductility, although some yield strength is lost. 

We are manufacturer of Carbon Steel Pipes and supply high quality Carbon Steel Pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

US DOC Sets Dumping Duties on Some Steel Pipe Imports

US Department of Commerce announced on Friday its final ruling on anti-dumping duties on imports of steel pipes and tubes from South Korea, Mexico and Turkey, setting levies. The decision covers imports of heavy-walled rectangular welded carbon steel pipes and tubes which are used in construction and transportation.

The Characteristics of Stamping Elbow

Stamping elbow is used in water supply pipe, water vapor pipeline, gas pipeline, oil pipeline connection. Stamping elbow color is black, right angle camber, excellent quality, wear resistance, not easy to damage. Stamping elbow standard is 1/2-10 inch, the products are widely used in petroleum, chemical, metallurgy, electric power and other professional pipeline equipment, equipment, matching and other effects.

Here is the characteristics of stamping elbow

First, the environmental protection: PE-RT can be used to recover, do not pollute the environment. PEX can not be recovered will be secondary pollution; stamping elbow pipe development trend: stamping elbow material not only has qualified the creep rupture curve and the pipe price moderate, construction relative to other types of convenience, convenient, connection methods are attributed to the standard at this stage is the most reliable inter penetration of hot melt connection method, pipe parts of aperture is greater than the inner diameter of the same pipe standard, in the system because there is no necking part of the mechanical connection methods, so system fluid resistance is relatively small.

Two, a long time pressure function, only from the description of stress, the standard stamping elbow pressure function is the best. However, due to various factors, the floor heating pipe practice wall thickness is generally 2mm. And in this wall thickness of all kinds of pipe can be satisfied with the demand for floor heating, stamping elbow pipe pressure superiority performance does not come out;

Three, low temperature heat shock resistance: PE--RT and PEX resistance to low temperature impact function better. Winter construction is susceptible to the impact of pipe rupture, increase the flexibility of the organization construction.

Four, stamping elbow pressure function is the best. But due to various factors, floor heating pipe of the actual wall thickness of and in the thickness of the various types of pipes can be satisfied with floor heating demand, GB punching elbow pipe pressure advantage does not come out; thermal conductivity: for floor heating demand for pipe has good thermal conductivity.

API 5L ERW Pipes

API 5L ERW Pipes Specification

Product Type: API 5L

Product Name: API 5L gr.b erw carbon steel round pipe

API 5L gr.b erw carbon steel round pipe

Sizes (ERW): 1/2″ – 48″

High Yield ERW/SAW Carbon Steel Pipe: API 5L Gr.B X42/X46/X52/X56/X60/X65/X70/X80 PSL-1

API 5L gr.b erw carbon steel round pipe

Type: Electric Resistance Welded (ERW) carbon steel round pipe

Size: NPS 1/2 TO NPS 48 (DN15 to DN 1200), with nominal（average）wall thickness as given in ASME B 36.10M or as customer’s requirement

Outer Diameter (in mm): from 21.3mm to 1219.2mm

Thickness: from 4mm to 12mm

Standard: ANS/API 5L PSL1

Length: Min 3 Meters, Max12 Meters, or according to customer’s requirement

Surface: Black painting, varnish paint, anti rust oil, hot galvanized or cold

We are manufacturer of API 5L ERW pipes and supply high quality API 5L ERW pipes in both large and small quantities worldwide & offer you the best prices in the market.

For more information, please contact us.