API 5L X70 Line Pipe Production Capability Overview

Carbon Steel Pipe Caps

September 26, 2025

API 5L PSL2 X70 Line Pipe

October 4, 2025

This document outlines the manufacturing scope and technical specifications for our $API 5L X70$ (L485) steel line pipe products, covering a comprehensive range of dimensions, grades, welding processes, and protective coatings required for high-pressure energy transmission projects.

1. Dimensional and Grade Range

Nominal Size and Wall Thickness

Our production capability covers the full spectrum of industry requirements, from small bore to large diameter mainline piping.

Parameter	Range	Details
Nominal Pipe Size (NPS) O.D.	$1/2″ to 48″$	Full range capacity for general line pipe requirements.
Wall Thickness	Schedule 10 through 160, STD, XS, XXS	Comprehensive coverage including all common and heavy-wall specifications.

Manufacturing Grade Coverage

We offer seamless and welded pipes in all common API 5L grades, with X70 (L485)
being the target grade and welded pipes offering performance up to X80 (L555).

Pipe Type	Grade Range (Minimum Yield Strength)	Dimension Range (O.D.)
API 5L Seamless Pipe	$B (L245) - X42 (L290) - X52N (L360) - X60 (L415) - X65 (L450)$	$1/4” up to 26”$
API 5L Welded Pipe	$B (L245) - X42 (L290) - X52N (L360) - X60 (L415) - X65 (L450) - X70 (L485) - X80 (L555)$	$1/2” up to 60”$

2. Manufacturing Processes and Specifications

Product Specification Level (PSL)

All $X70$ pipe products are offered under both standard and critical service specifications.

Product Specification Level	Description
API 5L X70 PSL 2	Highest technical standard, mandatory $Charpy$ toughness testing, stricter chemistry, and $100% NDE$ .
API 5L X70 PSL 1	Standard specification for general applications.

Detailed Manufacturing Process Capabilities

Our facilities utilize a variety of welding and forming technologies to optimize pipe manufacturing for different diameters and wall thickness requirements.

Weld Alternative	O.D. Size Range	Wall Thickness Range	Application Focus
ERW (Electric Resistance Welding)	$0.375″ through 30″$	$0.120″ through 1.000″$	Medium diameter, standard pressure.
HF (High Frequency Welding)	$0.840″ through 24″$	$0.120″ through 1.000″$	Small to medium diameter, standard pressure.
DSAW/SAWL (Double Submerged Arc Welded, Longitudinal)	$12.75″ through 144″$	$0.250″ through 6.000″$	Largest diameters and heavy wall applications.
SMLS (Seamless)	$0.840″ through 26″$	$0.250″ through 2.500″$	High pressure, thick wall, and critical service applications.
HSAW (Helical/Spiral Submerged Arc Welded)	$8.625″ through 144″$	$0.250″ through 1.000″$	Large diameter, cost-effective manufacturing.

3. Product Finishing and Coating

Standard Lengths

Pipes are supplied in industry-standard lengths as well as custom requirements for specific projects.

Length Type	Description
Single Random	Standard mill lengths.
Double Random	Preferred length for field welding efficiency.
Custom	Up to 300 feet (upon specific request).

End Finishes

End preparation is customized to suit field installation and welding methods.

Beveled: Standard preparation for field butt-welding.
Square Cut: For specialized connections or mechanical fittings.
Threaded & Coupled: For small-diameter, non-welded applications.

Surface Finishes and External Anti-Corrosion Coatings

We provide a comprehensive range of external coating services implemented according to major international standards.

Coating Type	Standards Performed
Standard Finishes	Bare, Oiled, Mill Varnish, Galvanized (Galv)
Fusion Bond Epoxy (FBE)	Single-layer $FBE$ , $FBE Dual$
Polyethylene/Polypropylene Systems	3LPE (3-Layer Polyethylene), 3LPP (3-Layer Polypropylene)
Legacy/Specialized Coatings	Coal Tar, Concrete Coating, Tape Wrap
Performance Standards	$DIN30670, DIN30671, DIN30678, CAN/CSA-Z245.21-M92, SY/T4013-2002, SY/T0315-97$