Welded Steel Pipes

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API 5L Welded Steel Pipe

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API 5L Carbon Steel Tubes

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DIN ERW Steel Pipes

Section shape: round

Special tube: API Tube, EMT Tube, Thick Wall Tube, Boiler Tube

Outer diameter: 63 – 63.5 mm

thickness: 1 – 15 mm

length: 12M, 6m, 6.4M

Certificate:  API, ce, Bsi, RoHS, SNI, BIS, SASO, PVOC, SONCAP, SABS, sirm, tisi, KS, JIS, GS, ISO9001

Size:
Outer Diameter: 1/8″-36″(10.3mm-914.4mm)
Wall Thickness: 1.0mm-20mm
Length: Random Length,SRL,DRL(4-14M)

Steel Grade:
A53 Gr. A, Gr B, A106 GR.A GR.B A333 GR1 GR3 GR6 

End:pland ends beveled ends

Surface: Bare, Black,Lightly oiled, Hot dip galvanized,, Varnish coating/Anti rust oil, Protective Coatings, 3PE

Packing:Nude, Plastic/steel plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.

ASTM A53 /A106 Chemical Components and Machanical Property
Standard  Steel Grade Chemical Components  
C  Mn P S Cu Ni Cr Mo V      
ASTM A53 A ≤0.25 ≤0.95 ≤0.05 ≤0.045 ≤0.40 ≤0.40 ≤0.40 ≤0.15 ≤0.08      
B ≤0.30 ≤1.20 ≤0.05 ≤0.045 ≤0.40 ≤0.40 ≤0.40 ≤0.15 ≤0.08      
Standard  Steel Grade Chemical Components  
C  Si Mn P S Cu ,Ni Cr Mo V      
ASTM A106 B ≤0.30 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.15        
C ≤0.35 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.15        

Steel pipe (pipe made of steel) has a hollow cross-section that is much longer than the diameter or circumference of steel. According to the cross-sectional shape, it is divided into circular, square, rectangular and special-shaped steel pipes; according to the material, it is divided into carbon structural steel pipes, low-alloy structural steel pipes, alloy steel pipes and composite steel pipes; Steel pipes for thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment, etc.; according to the production process, they are divided into seamless steel pipes and welded steel pipes, of which seamless steel pipes are divided into hot-rolled and cold-rolled (drawn) Two types, welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipes.

Steel pipes are not only used for conveying fluids and powdered solids, exchanging thermal energy, making machine parts and containers, but also an economical steel. Using steel pipes to make building structure grids, pillars and mechanical supports can reduce weight, save 20-40% of metal, and realize factory-based mechanized construction. Using steel pipes to manufacture highway bridges can not only save steel and simplify construction, but also greatly reduce the area of protective coating, saving investment and maintenance costs.