AISI 5L X65 Welded Steel Pipe Oil Line Spiral ASTM A252 A36 ERW/SSAW Carbon Welding Pipes Large Diameter Structure X46 Steel Pipeline Factory

Product Description

AISI 5L X65 Welded Steel Pipe Oil Line Spiral ASTM A252 ERW/SSAW Carbon Welding Pipes Large Diameter Structure X46 Steel Pipeline Factory

Product Description

Technical Characteristics
Material Requirements: Mainly made of carbon steel or alloy steel (e.g., Aisi 5L X65 uses low-alloy steel). The chemical composition (carbon, manganese, chromium content) is strictly limited to ensure mechanical properties.
Mechanical Properties: Must meet standards for tensile strength, yield strength, and impact toughness. For example, AISI 5CT P110 casing requires a minimum yield strength of 110 ksi (758 MPa).
Manufacturing Processes:
Seamless pipes: Produced via hot rolling, cold drawing, or extrusion (high pressure resistance, used for critical parts like casing).
Welded pipes: Made by electric resistance welding (ERW) or submerged arc welding (SAW);  SAW pipes are common for long-distance pipelines.
Testing Requirements: Mandatory inspections include hydrostatic testing (pressure leakage test), non-destructive testing (NDT: ultrasonic, radiographic testing), and material composition analysis.
 Typical Applications
Oil & Gas Industry: The core application field, including onshore/offshore oil pipelines (5L), oil well casing/tubing (5CT), and drill pipes ( 5D).
Petrochemical Industry: Used in refineries for transporting high-temperature, high-pressure oil products and chemical media.
Energy & Infrastructure: Applied in natural gas transmission networks, geothermal energy development, and high-pressure water injection projects.
4. Key Factors for Selection
Clarify the Standard: Choose the corresponding AISI standard based on the scenario (e.g., use 5L for pipelines, 5CT for well casings).
Confirm the Grade: Select the material grade according to pressure and environmental conditions (e.g., high-pressure offshore pipelines use 5L X80, while low-pressure gathering pipes use X42).
Check Certifications: Ensure the product has certification (AISI Monogram) and third-party inspection reports (e.g., SGS, BV) to avoid non-compliant products.
Consider the Environment: For corrosive environments (e.g., offshore, sour gas wells), choose pipes with anti-corrosion treatments (e.g., 3PE coating, stainless steel lining).

Products	Carbon steel pipe/tube
	Round tube	Square Tube	Rectangular Tube
Thickness	0.8-50mm	2-50mm	0.6-25mm
Outer Diameter	15-165mm	20*20-500*500	10*20mm-700*300mm
Steel Grades	Q195,Q215,Q235,Q345,ST37 ST52, A36,A53,SS400,S235,S275,C20,C45,1006,1008,1010,1022
Standard	ASTMA53,BS1387-1985,GB/T3091-2001,GB/T13793-92, GB/T6728-2002
Technique	Hot rolled / cold rolled
Surface	Black Finish ,Oiled,Shot Blasted,Spray Paint,Coated,Galvanized,Or as Your Request
Pipe Ends Treatment	Plain, beveled, threaded, socket with holes, with PVC clap/ coupling/ clamp, or as customers' requirement
Package	In bundle, no other package or wrapped with waterproof, or as customers' requirement
Application	Iquid delivery (pump well, gas, water), construction pipe, structural pipe(greenhouse structure, fence post), curtain wall, machinery part etc.
Payment Term	T/T, L/C at sight,West Union
Price Term	CIF; CFR; FOB; EXW

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FAQ

Q1: Why choose us?
A: Our company, as an internationally experienced and professionalsupplier, has been engaged in steel business for more than ten years. Wecan provide a variety of steel products with high quality to our clients.

Q2: Can you provide OEM/ODM service?
A: Yes. Please feel free to contact us for more details

Q3:What is your terms of payment?
A: 100% T/T advance.
30% T/T and balance against copy of documents.
30% T/T advance, balance L/C at sight.

Q4: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange theprofessional sales team to follow up your case.

Q5: Can you provide sample?
A: Yes. Sample is free for regular sizes, but the buyer needs to pay freightcost.

Q6: How long is your delivery time?
A: Regular lead time is 15 to 30 days after receiving deposit.