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ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe
  • ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe
  • ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe
  • ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe
  • ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe
  • ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe
Payment Type: L/C,T/T
Terms of Trade: FOB,CFR,CIF
Min. Order: 10 Meter
Delivery Time: 30 Days
Packaging: Bundled or as per buyer's requirements
Productivity: 1000mtr/month
Brand: Bangdong
Transportation: Ocean,Land,Air,Train/TNT/DHL
Place of Origin: Cangzhou,China
Supply Ability: 1000mtr/month
Certificate: ISO/CE/API
HS Code: 73051100
Port: Zhengzhou Train Station,Wuhan Train Station,Tianjin New Port
Basic Info

Model No.: Welded Steel Pipe

Product Description

ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe

Stainless steel pipe and carbon steel pipe are the most common type of standard pipe used today. They are part of tubular goods which are manufactured to different specifications and standards. Pipes are sold by "nominal pipe size" in sizes from 1/8" to 72". Two most common types of pipes are welded pipe and seamless pipe. Both are available in carbon steel and stainless steel. Welded pipe is also called ERW (Electric Resistance Welded) pipe. Most common specification for welded carbon steel pipe is A53. Seamless pipe is made by process that requires no welding. Most common specification for seamless carbon steel pipe is A106 B Steel Pipe. Stainless Steel pipe is made to spec A312. Stainless steel pipe is also available in both seamless and welded configuration. Most common stainless material is 316 and 304.

ASTM Specification A53 covers seamless and welded, black and hot-dipped galvanized nominal (average) wall pipe for coiling, bending, flanging and other special purposes and is suitable for welding.


Seamless and ERW Grade A Grade B
Tensile Strength, min, psi 48,000 60,000
Yield Strength 30,000 35,000


Seamless and ERW C max % Mn max % P max % S max %
Grade A 0.25 0.95 0.05 0.045
Grade B 0.30 1.20 0.05 0.045
  • Testing Requirements for seamless and welded API 53 steel pipe
    • Hydrostatic Testing test pressures for plain and threaded and coupled pipe are specified. Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and ERW pipe.
    • Mechanical Tests:
      • Tensile Test: Two transverse tests required on the ERW for NPS 8 and larger, one across the weld and one opposite the weld.
      • Flattening Test: On ERW for NPS 2 and larger, STD and XS wall (not required for XXS pipe)
      • Bending Test (cold): For NPS 2 and under, XS wall and under; for NPS 1-1/4 and under, XXS wall
      Degree of Bend Diameter of Mandrel
      For normal A53 users 90 12 x nom. diameter of pipe
      For Close Coiling 180 8 x nom. diameter of pipe
    • Number of Tests: Seamless and Electric Resistance Weld (ERW) – bending, flattening, tensile on one length of pipe from each lot of 500 lengths, or less, of each pipe size.
  • Permissible Variations for A53 steel pipe
    • Wall thickness: The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.
    • Weights per foot are plus or minus 10%
    • Outside diameter: Outside diameter at any point shall not vary from standard specified more than:
    NPS Over Under
    1-1/2 and smaller +1/64" -1/64"
    2 and larger +1% -1%
  • Lengths of A53 steel pipe
    Products A53 seamless and welded steel pipe is produced in random lengths 16` – 22` or 32` – 44`, in multiple lengths, and in specific cut lengths.
  • Marking Requirements
    Rolled, die-stamped, ink-printed, or stenciled (manufacturer`s option).
    • Manufacturer`s name, brand, or trademark
    • Size and wall
    • Steel grade
    • ASTM A53

Supply Alloy Hot Rolling Seamless Tube,Cold Rolled Seamless Stainless Steel Pipe,Seamless Steel Boiler Pipe.

Seamless stainless pipe is used for applications that require internal pressure within the pipe such as process equipment, water treatment and marine applications. Welded steel pipe is used for structural applications that are exposed to corrosive environments such as marine and external applications. These include handrails, poles and support piping.

Carbon Steel Pipe
A53 A106 API5L Grade B/C X42 Seamless Pipe (Type S)
Size: 1/8" - 26"
Schedule: All
A53 Grade A/B X42 ERW Pipe
Size: 1/2" - 26"
Schedule: Std, XH
PL5L X42 X52 X70 Seamless Pipe (Type S)
2" - 24"
Schedule: Std, XXH
A53 APL5L Grade B X-42 X-52 X-70 ERW (Type E)
Size: 2" - 24"
Schedule: All
APL5L Grade B X42 X52 X70 DSAW/SAW
Size: 26" - 60"
Schedule: Std, XH
A252 Structural Grade
Size: 4" - 16"
Schedule: 10 - Std
AA139B Spiral Welded
Size: 4" - 144"
Schedule: .134" - .75"
API 5CT Grades J-55, K-55, N-80, L-80 and more
Size: 1.6" - 20"
Schedule: All
API 5D / API Spec. 7, and API RP7G, Drill Pipe
Size: 3.5" - 5.5"
Schedule: XH
Seamless Pipe - Steel
ASTM A 53 Grade B ASME SA 106 Gr. B/C
ASTM A 106 Grade B API5LX42
ASTM A 333 Grade 1/6 NACE MR01-75
ASME SA 106 Grade B ABS Certified
API5L Grade B /X42/X52/X60/X65
Size: 1/8" - 26" Single Random and Double Random Lengths
Wall Thickness: Per NPS

Carbon Steel Tube
Electric-Resistance-Welded Carbon Steel and Carbon Manganese Steel Boiler Tube
Specification: A 178/A 178M
Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
Specification: A 179/A 179M
Seamless Carbon Steel Boiler Tube for High-Pressure Service
Specification: A 192/A 192M
Seamless Medium-Carbon Steel Boiler tube and Super-heater Tube
Specification: A 210/A 210M
Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tube
Specification: A 214/A 214M

ASME/API/GOST/DIN/En/JIS Seamless and Welded Steel Pipe

Shijiazhuang Bang dong Pipeline Technology Co,Ltd.


Shijiazhuang Bangdong pipe Technology Co., Ltd is located in Shijiazhuang , the capital city of Hebei , with superior geographical position and convenient transportation.It is a real professional manufacture and exporter of pipe fittings ASME ANSI B16.9, AND JIS.

The company produces and exports pipes and pipe fittings, including ELBOW/TEE/REDUCER/CAPS/FLANGE and other pipeline products . With technological production team and excellent sales staff , we keep improving efficiency regularly and ensure a better customer service experience. Our company values product quality and set up a complete quality control system and comprehensive detection means.

We insist "customer focus, honest in business, faithful in services, trusty in advertisement", Try to make the market leading products and to be reliable manufacturers by customers. Pay great attention to every detail, accurate to each number, refinement to every joint. "Give me a chance, bring you a surprise!" Sincerely welcome all customers to discuss cooperation.

Company Info
  • Company Name: Shijiazhuang Bang dong Pipeline Technology Co,Ltd.
  • Representative: Mr.Liu
  • Product/Service: Seamless Steel Pipes , Butt Weld Pipe Fittings , Forged Pipe Fittings , Steel Flanges , Pipe Elbow & Tee & Reducer , Fittings & Flanges
  • Capital (Million US $): 100
  • Year Established: 2015
  • Total Annual Sales Volume (Million US $): Below US$1 Million
  • Export Percentage: 91% - 100%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: 6
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: no
  • Factory Size (Sq.meters): Below 1,000 square meters
  • Factory Location: Yanta Road,Yanshan County,Cangzhou City,HeBei Province,China
  • Contact Person: Ms. luffy
  • Tel: 86-0311-83886517
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