+8615674993216
sales@forever-steels.com
English
العربية
Common Standards and Steel Grades
We supply a full range of pipeline steels that comply with the most recognized international standards for oil and gas transport:
API SPEC 5L:The industry benchmark for line pipe material.
Common Grades:Grade B, X42, X46, X52, X56, X60, X65, X70, X80.
Product Specification Levels:Available in bothPSL1(General) andPSL2(Strict mechanical/chemical requirements).
ASTM A572:High-strength low-alloy structural steel for ancillary pipeline structures.
EN 10208:Steel pipes for pipelines for combustible fluids.
ISO 3183:International standard for petroleum and natural gas industries—Steel pipe for pipeline transportation systems.
Dimensions and Technical Specifications
We provide large-format plates to facilitate the manufacturing of LSAW (Longitudinal Submerged Arc Welded) and SSAW (Spiral Submerged Arc Welded) pipes:
|
Feature |
Specification Range |
|
Thickness (WT) |
6mm to 60mm (Up to 100mm for high-pressure station piping) |
|
Width |
1500mm to 4500mm (Ultra-wide plates for large-diameter pipes) |
|
Length |
6000mm to 18000mm (Custom lengths to optimize pipe sections) |
|
Surface Condition |
Bare, Shot-blasted, or Anti-corrosion Coated |
|
Edge Condition |
Square cut or CNC Beveled for welding preparation |
Core Application Fields
Pipeline steel plates are the starting material for massive infrastructure projects:
Oil & Gas Transmission:Manufacturing of high-pressure mainlines for crude oil, natural gas, and petroleum products.
Offshore Subsea Pipelines:Heavy-wall plates designed for deep-water collapse resistance and sour service (H2S resistance).
Water Transmission:Large-diameter pipes for municipal water supply and high-pressure irrigation systems.
Hydrogen Transport:Specialized "Hydrogen-Ready" plates with low-permeability microstructures.
Slurry Pipelines:Abrasion-resistant pipeline steel for mining and mineral transport.
Common steel plate standards and grades
| Application | International Standard | Common Material Grades |
| Structural / Construction |
ASTM A36 A572EN 10025 AS/NZS 3678 |
Grade 36, Grade 50, Grade 60S235JR, S275JR, S355JR/J0/J2G250, G350, G450 |
| Pressure Vessel / Boiler |
ASTM A516 / A28 EN 10028 AS 1548 |
Gr. 60, Gr. 65, Gr. 70P235GH, P265GH, P355GHPT430, PT460, PT490 |
| Shipbuilding / Offshore | ASTM A131Class Societies | Grade A, B, D, EAH32, DH36, EH36 (ABS/BV/LR/DNV) |
| High Strength (HSLA) |
ASTM A51 EN 10025-6 |
Grade Q, Grade SS690QL, S890QL, S960QL |
| Abrasion Resistant (AR) | Proprietary / ISO | AR400, AR450, AR500 (Hardness Brinell) |
Steel Plate Dimensional Tolerances
| Standard (Application) | Parameter | Tolerance Category/Class | Thickness Range (mm) | Tolerance Value (mm) |
| EN 10025 / EN 10225(Structural & Offshore) | Thickness(Acc. to EN 10029) |
Class A (Standard Class B (Fixed -0.3mm) Class C (All Plus) Class D (Symmetrical) |
8 ≤ t < 15 15 ≤ t < 25 25 ≤ t < 40 |
Class A: -0.5 / +1.1 Class B: -0.3 / +1.3 Class C: -0.0 / +1.6 Class D: -0.8 / +0.8 |
| Width |
Width ≤ 2000m Width > 2000mm |
All | -0 / +20mm-0 / +25mm | |
| Length |
Length < 4000m 4000 ≤ L < 6000 |
All | -0 / +20mm-0 / +30mm | |
| ASTM A516 / A20(Pressure Vessel) | Thickness | Under-tolerance (Fixed) |
t < 25m 25 ≤ t < 50 50 ≤ t < 75 |
-0.3mm-0.3mm-0.3mm |
| Over-tolerance (Var.) |
t < 25m 25 ≤ t < 50 50 ≤ t < 75 |
+1.1mm+1.5mm+1.8mm | ||
| Width |
W ≤ 1500m 1500 < W ≤ 2100 |
All |
-0
/ +19mm -0 / +25mm |
|
| Length |
L < 3600m 3600 ≤ L < 6000 |
All | -0 / +19mm-0 / +25mm | |
| EN 10028(Boiler & Vessel) | Thickness(Strict) | Class B (Common) |
6 ≤ t < 1 15 ≤ t < 30 30 ≤ t < 50 |
-0.3 / +1.1 -0.3 / +1.3 -0.3 / +1.7 |
| API 5L PSL1/PSL2(Pipeline Steel) | Thickness | Body of Plate |
6.4 < t < 12. 12.7 ≤ t < 20.0 |
± 0.1t (PSL1) ± 0.1t (PSL2 max ±1.5) |
| Width | All | All | ± 0.005 × Width | |
| Length | Fixed Lengths | All | -0 / +100mm (or per contract) |
Carbon Steel Plate Production Process
Package and marking
According to customer's requirements, more than two steel plates can be bundled as following.
1. Two or more steel plates are bare and bound, and the unit plate are not bound.
2. Horizontal binding not less than four,the edge can be protected angle.
3. The straps at both ends are fixed at 200~500 mm from the end of the plate.
Marking
1. The marking is eye-catching, firm,clear and standard,and does not fade.The marking information Includes Surface painting, side painting (side label) and die stamping.
2. Surface painting contains the following information: Forever steel company logo, steel grade,standard,plate number, plate dimensions, heat number, special painting (CE certification, vessel certification, API certification, etc.), special requirements of the customer.
3. Side painting (side label) paste flat, firm, parallel to the direction of the steel plate rolling, information includes steel grade, plate number, plate dimensions, special requirements of the customer.
4. Die stamping: suitable for shipbuilding plate, CE certification plate, API certification plate, vessel plate and steel plate required by customer, information includes: steel grade, plate number, special information (ship certification, CE certification and API certification, etc.), special requirements of the customer.
