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| Categories | Precision Steel Tube |
|---|---|
| Brand Name: | TORICH |
| Model Number: | SA139 |
| Certification: | ISO9001 ISO 14001 TS16949 |
| Place of Origin: | Zhejiang/China |
| MOQ: | 1Ton |
| Price: | 800-100 USD/Ton |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability: | 60000 Ton/Tons per Year |
| Delivery Time: | 20-30days upon products |
| Packaging Details: | In bundles or in wooden boxes. |
| Application: | Structure Pipe,Hydraulic Pipe,Construction,Fluid Pipe,Oil Pipe |
| Outer diameter(round): | 30 - 426mm, |
| Thickness: | 2 - 50 mm, |
| Standard: | ASTM,DIN,GB,JIS,API |
| Technique: | ERW,Hot Rolled/Cold Drawn |
| Grade: | Grade A B C D E |
| Section shape: | Round,Rectangular |
| Length: | 6M or as requirement,As customer's require |
| Company Info. |
| TORICH INTERNATIONAL LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
Material
These pipes are manufactured from carbon steel conforming to the
ASME SA139 (ASTM A139) specification for electric-fusion (arc)
welded spiral‑ or straight‑seam pipe. They are designed for
conveying liquids, gases, or steam and are suited to high‑strength
structural and pressure‑resistance requirements (cited per ASTM
A139/A139M).
Specifications
• Nominal Pipe Size (NPS): 4″–92″ (typical automotive use: 4″–36″)
• Wall Thickness: up to 1.0 inch (25.4 mm) typical
• Form: Spiral‑welded (SAW/SSAW) pipe, saw‑cut ends,
plain/beveled/treaded finish
Chemical Composition
| Grade | C (max %) | Mn (max %) | P (max %) | S (max %) |
|---|---|---|---|---|
| A | 0.25 | 1.00 | 0.035 | 0.035 |
| B | 0.26 | 1.00 | 0.035 | 0.035 |
| C | 0.38 | 1.20 | 0.035 | 0.035 |
| D | 0.30 | 1.30 | 0.035 | 0.035 |
| E | 0.30 | 1.40 | 0.035 | 0.035 |
Mechanical Properties
| Grade | Min Yield Strength (psi / MPa) | Min Tensile Strength (psi / MPa) |
|---|---|---|
| A | 30,000 psi (~205 MPa) | 48,000 psi (~330 MPa) |
| B | 35,000 psi (~240 MPa) | 60,000 psi (~415 MPa) |
| C | 40,000 psi (~290 MPa) | 70,000 psi (~485 MPa) |
| D | 42,000 psi (~290 MPa) | 60,000 psi (~415 MPa) |
| E | 52,000 psi (~360 MPa) | 66,000 psi (~455 MPa) |
Major Characteristics
– High strength and toughness for pressure resistance.
– Fabrication flexibility: spiral welding enables large diameter
and long lengths.
– Consistent quality through standardized electric‑fusion weld
process.
– Economical production compared to seamless or LSAW alternatives.
– Suitable for straight or saw‑cut end finishes for custom
assembly.
Applicable Standards
ASTM A139 / ASME SA139 provides grade definitions, chemical and
mechanical requirements, and testing protocols.
Applications in the Automotive Industry
– Structural frames or supports: large‑diameter tubular supports or
lift shafts.
– Fluid transport systems: low‑pressure oil or coolant delivery
under vehicle assembly.
– Hydraulic or pneumatic conduit: robust piping for material
handling or robotics within plants.
– Engineering equipment: machinery and structural piping in
automotive manufacturing facilities.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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