Name: China API 5L X42 ERW Steel Pipe Manufacturers Suppliers Factory - Shenzhoutong Steel Pipe
Brand: Shenzhoutong
SKU: 317983633

API 5L X42 ERW steel pipe is a high-quality line pipe designed for the transportation of oil, natural gas, water, and other fluids in pipeline systems. This product represents a reliable solution for low-to-medium pressure transmission projects. The "X42" designation indicates a minimum yield strength of 42,100 psi (290 MPa), also known as L290 under ISO 3183 standards. As an ERW pipe, it is produced using high-frequency electric resistance welding technology, ensuring precise dimensional accuracy, uniform wall thickness, and excellent weld integrity without the need for filler metal.

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Products Description

Product	API 5L X42 ERW steel pipe
Process	Electrical Resistance Welding
Production Stardard	API 5L PSL1, PSL2
Grade	B, X42, X46, X52, X56, X60, X65, X70
Size Range	OD 1/2"–26"(21.3–660mm), Thickness 0.055"–1.602"(1.65–26.97mm)
Pipe Length	5.8m, 6m,12m,as requirement
Pipe Ends	Plain, Bevel, Threading and coupling, Grooved
Surface Treatment	bare, black paint, anti-rust oil,galvanized , FBE, Epoxy,3PE , 3PP
Application	oil , gas, water transportations, industries, Structure. Piling

manufacturing

---Coil receipt and inspection---Coil slitting--Recoiling after slitting---Coil Uncoiling and joining

---Coil Leveling--Forming---High frequency welding---Trimming flash---Heat treatment---Air Cooling

---Sizing--- Cutting to length---Inspection and testing sampling --- Hydrostatic testing

---Final Auto UT on welding seam---Manual UT at pipe ends

---Laboratory test – Chemical analysis--- Mechanical Test-- Final dimension inspection

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Material

1. Mechanical Properties

‌Minimum Yield Strength:‌ 290 MPa (42,100 psi)

‌Tensile Strength:‌ ≥ 415 MPa (60,200 psi)

‌Elongation:‌ Minimum 21% (varies slightly based on pipe diameter and PSL level)

2. Chemical Composition (Typical Max %)

‌Carbon (C):‌ ≤ 0.28%

‌Manganese (Mn):‌ ≤ 1.30%

‌Phosphorus (P):‌ ≤ 0.030%

‌Sulfur (S):‌ ≤ 0.030%

‌Micro-alloys:‌ Nb + V ≤ 0.06%; V + Nb + Ti ≤ 0.15%

Note: PSL2 pipes have tighter controls on carbon equivalent (CEQ) to ensure weldability and toughness.

Certifications

‌Quality Assurance

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* Hydrostatic Pressure Test
* Non-Destructive Test (Eddy Current, Ultrasonic)

* Chemical composition test
* Mechanical Property Test
* Dimension & Visual Inspection
* Full Traceability (Mill Test Certificates 3.1 from raw material to finished pipes)

* Accept third party inspection before shipment

Applications

API 5L X42 ERW steel pipes are widely used in various industrial sectors, including:

‌Oil & Gas Transmission:‌ Onshore and offshore pipelines for crude oil, natural gas, and refined products.

‌Water Supply:‌ Municipal water distribution networks and irrigation systems.

‌Structural Applications:‌ Scaffolding, fencing, and general construction supports.

‌Low-to-Medium Pressure Systems:‌ Suitable for working pressures typically ranging from 6.3 MPa to 10 MPa, depending on wall thickness and design factors.

‌Sour Service Environments:‌ Specific variants are designed for environments containing hydrogen sulfide (H2S), ensuring resistance to sulfide stress cracking.