SHANDONG SHOUYA STEEL CO., LTD.
| Delivery Time | 15-30 days |
| Payment Terms | T/T |
| Name | Welded Steel Pipe |
| Packaging Details | Standard Export Packing |
| Supply Ability | 50,0000 tons per year |
| Model Number | Q235 Q345 API 5L Gr.B X42-X70 |
| Brand Name | Shouya |
| Place of Origin | China |
| Certification | CE, EN |
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Product Specification
| Delivery Time | 15-30 days | Payment Terms | T/T |
| Name | Welded Steel Pipe | Packaging Details | Standard Export Packing |
| Supply Ability | 50,0000 tons per year | Model Number | Q235 Q345 API 5L Gr.B X42-X70 |
| Brand Name | Shouya | Place of Origin | China |
| Certification | CE, EN | ||
| High Light | Straight Seam Welded Pipe ，Welded Steel Pipe Q235 ，Longitudinal Welded Steel Pipe | ||
Carbon Steel Straight Seam Welded Pipe | ERW/LSAW Longitudinal Welded Steel Pipe Q235 Q345 API 5L Gr.B X42-X70 for Water Transport & Construction
Our carbon steel straight seam welded pipe is manufactured from high-quality carbon steel strip or steel plate through ERW (Electric Resistance Welding) or LSAW (Longitudinal Submerged Arc Welding) processes. The pipe features a single straight weld seam running along the longitudinal direction, ensuring consistent dimensional accuracy and reliable weld integrity. It is widely used for water transport, construction, structural engineering, and fluid conveyance applications.
| Standard | Steel Grades |
|---|---|
| GB/T3091 | Q235A, Q235B, Q345A, Q345B |
| API 5L | Gr.B, X42, X46, X52, X56, X60, X65, X70 |
| GB/T9711 | L245, L290, L320, L360, L390, L415, L450 |
Mechanical Properties (Reference)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) |
|---|---|---|
| Q235B | ≥235 | 370-500 |
| Q345B | ≥345 | 470-630 |
| API 5L Gr.B | ≥245 | ≥415 |
| API 5L X42 | ≥290 | ≥415 |
| API 5L X52 | ≥359 | ≥460 |
| API 5L X60 | ≥414 | ≥520 |
| API 5L X65 | ≥448 | ≥531 |
| API 5L X70 | ≥483 | ≥565 |
ERW Pipe: High-frequency electric resistance welding process using hot-rolled coil as raw material. The process involves continuous forming, bending, welding, heat treatment, sizing, straightening, and cutting. ERW pipe offers high dimensional accuracy, uniform wall thickness, and good surface quality, making it ideal for small to medium diameter thin-wall applications such as city gas and crude oil transportation.
LSAW Pipe: Longitudinal submerged arc welding process using single thick steel plate. The steel plate is formed into shape using JCOE or UOE technology, followed by double-sided submerged arc welding. LSAW pipe features wide specification range, excellent weld toughness and plasticity, high pressure resistance, and low-temperature corrosion resistance. It is the preferred choice for high-strength, high-toughness long-distance oil and gas pipelines.
Water Transport: Municipal water supply and drainage pipelines, large-diameter water transmission projects
Oil & Gas Industry: Long-distance oil and gas transmission pipelines, high-pressure pipeline systems
Construction & Structural Engineering: Building steel structures, bridge supports, piling, scaffolding
Fluid Conveyance: Low-pressure steam, heating pipelines, chemical industry fluid transport
Our carbon steel straight seam welded pipes are manufactured in compliance with GB/T3091, GB/T9711, and API 5L standards. Each pipe undergoes rigorous quality control including:
Ultrasonic testing for weld seam and base material
X-ray inspection for weld quality
Hydrostatic pressure testing
Mechanical property testing (tensile strength, yield strength, elongation)
Multi-Standard Compliance – Products meet GB/T3091, GB/T9711, and API 5L requirements for diverse applications
Complete Steel Grade Coverage – From Q235/Q345 structural grades to API 5L X42-X70 pipeline grades
Advanced Production Technology – ERW and LSAW production lines with automated control systems
Strict Quality Control – 100% weld inspection and hydrostatic testing before shipment
Competitive Pricing – Direct factory supply with efficient production capacity
Packing: In bundles, hexagonal bundles, or customized according to customer requirements
Loading: 20GP / 40GP containers, bulk vessel
Delivery Time: 15-30 days after deposit confirmation
For inquiries, quotations, or technical specifications of carbon steel straight seam welded pipe, please contact our sales team. We support OEM, customized sizes, and third-party inspection (SGS, BV, etc.).
Company Details
Business Type:
Manufacturer,Agent,Exporter,Trading Company
Year Established:
2009
Total Annual:
200000000-230000000
Employee Number:
150~170
Ecer Certification：
Verified Supplier
Shandong Shouya Steel Co., Ltd. Welcome to Shandong Shouya Steel Co., Ltd., a professional steel foreign trade and steel solution provider based in Shandong, China. Founded in 2009, we leverage Shandong’s steel industrial cluster advantages and boast more than ten years of experience in... Shandong Shouya Steel Co., Ltd. Welcome to Shandong Shouya Steel Co., Ltd., a professional steel foreign trade and steel solution provider based in Shandong, China. Founded in 2009, we leverage Shandong’s steel industrial cluster advantages and boast more than ten years of experience in...
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