TORICH INTERNATIONAL LIMITED
| 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. |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled |
| Application | Mechanical And General |
| Standard | ASTM,GB,DIN,API,BS |
| Alloy or not | Non-alloy |
| Thickness | 0.5 - 20 mm |
| Section shape | Round,rectangular/ square/ round |
| Grade | E235 (1.0308) E275 (1.0225) E355 (1.0580) 25CrMo4 42CrMo4 |
| Special pipe | Thick Wall Pipe,precision seamless pipe,precision seamless steel tube,cold drawn |
| Secondary or not | Non-secondary |
| Outer diameter(round) | 20 - 480 mm |
| Length | 1-12m/as customers' requests |
| Product name | Seamless Steel Pipe |
| Type | Seamless,Hot Rolled |
| Brand Name | TORICH |
| Model Number | EN 10297-1 |
| Certification | ISO9001, ISO14001, TS16949 |
| Place of Origin | Zhejiang/China |
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Product Specification
| 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. |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled | Application | Mechanical And General |
| Standard | ASTM,GB,DIN,API,BS | Alloy or not | Non-alloy |
| Thickness | 0.5 - 20 mm | Section shape | Round,rectangular/ square/ round |
| Grade | E235 (1.0308) E275 (1.0225) E355 (1.0580) 25CrMo4 42CrMo4 | Special pipe | Thick Wall Pipe,precision seamless pipe,precision seamless steel tube,cold drawn |
| Secondary or not | Non-secondary | Outer diameter(round) | 20 - 480 mm |
| Length | 1-12m/as customers' requests | Product name | Seamless Steel Pipe |
| Type | Seamless,Hot Rolled | Brand Name | TORICH |
| Model Number | EN 10297-1 | Certification | ISO9001, ISO14001, TS16949 |
| Place of Origin | Zhejiang/China |
EN 10297-1 covers seamless circular steel tubes manufactured from non-alloy and alloy steels for mechanical engineering and general engineering components where reliable strength, machinability, and dimensional stability are required. Typical supply routes include hot-finished and cold-finished tubes, with heat treatment options (e.g., normalized) selected to match forming, welding, and final-part performance expectations.
Product form: Seamless round tube (circular)
Manufacturing: Hot-finished / cold-finished (per order)
Delivery condition (common): As-rolled / annealed / normalized / quenched & tempered (grade- and requirement-dependent)
Dimensional tolerances (typical reference per EN 10297-1 practice):
Outside diameter tolerances commonly ±1% (and for small OD, often ±0.5 mm)
Wall thickness tolerances depend on T/D ratio, with typical bands such as ±12.5% to ±20% depending on size relationships
Optional testing & documentation (often requested by buyers):
EN 10204 3.1 material inspection certificate (MTC)
Dimensional inspection report
NDT (UT/ET) by agreement
Mechanical testing (tensile, impact where applicable)
Seamless integrity for higher reliability versus welded tubing in critical load paths
Grade flexibility (from E-series structural/mechanical grades to Cr-Mo alloy grades) for cost/performance optimization
Good manufacturability: suitable for machining, drilling, boring, and controlled forming depending on grade & condition
Engineering-ready traceability with heat number / batch identification and MTC alignment
“Will the tube meet my machining and strength targets without surprises?”
We recommend the grade + delivery condition combination based on your use case (machining vs. forming vs. high-strength shafts). Minimum mechanical property requirements are aligned to EN 10297-1 grade tables (example values shown below), reducing rework risk.
“Can you control OD/WT tolerances for assembly-fit components?”
We manage production routing (hot-finished vs. cold-finished) and apply tolerance controls consistent with EN 10297-1 dimensional tolerance guidance (OD and WT tolerance bands linked to diameter and T/D ratio).
“How do I ensure compliance, traceability, and incoming inspection efficiency?”
We support batch traceability, provide EN 10204 3.1 MTCs, and can add NDT and extra testing (UT/ET, impact tests when required) so your incoming QC can verify compliance quickly and consistently.
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Mo (%) |
|---|---|---|---|---|---|---|---|
| E235 (1.0308) | ≤0.17 | ≤0.35 | ≤1.20 | ≤0.030 | ≤0.035 | — | — |
| E275 (1.0225) | ≤0.21 | ≤0.35 | ≤1.40 | ≤0.030 | ≤0.035 | — | — |
| E355 (1.0580) | ≤0.22 | ≤0.55 | ≤1.60 | ≤0.030 | ≤0.035 | — | — |
| 25CrMo4 | 0.22–0.29 | ≤0.40 | 0.60–0.90 | ≤0.035 | ≤0.035 | 0.90–1.20 | 0.15–0.30 |
| 42CrMo4 | 0.38–0.45 | ≤0.40 | 0.60–0.90 | ≤0.035 | ≤0.035 | 0.90–1.20 | 0.15–0.30 |
| Grade | Reference thickness category | Yield Strength ReH (MPa) min | Tensile Strength Rm (MPa) min | Elongation A (%) min |
|---|---|---|---|---|
| E235 | T ≤ 16 mm | 235 | 360 | 25 |
| E275 | T ≤ 16 mm | 275 | 410 | 22 |
| E355 | T ≤ 16 mm | 355 | 490 | 20 |
| 25CrMo4 | T ≤ 8 mm | 700 | 900 | 12 |
| 42CrMo4 | T ≤ 8 mm | 900 | 1100 | 10 |
EN: EN 10297-1
ASTM (similar use-case): ASTM A519
JIS (similar use-case): JIS G3441
GOST (similar product family): GOST 8732
GB (similar structural/mechanical usage): GB/T 8162
General application domains: mechanical engineering, automotive components, construction machinery, industrial equipment, structural/mechanical assemblies.
Where used (examples):
E235 / E275: brackets, sleeves, frames, general machined parts, moderate-load shafts
E355: higher-load structural parts, machine frames, hydraulic and mechanical assemblies requiring higher strength
25CrMo4 / 42CrMo4: high-stress shafts, pins, drive components, crane/boom and heavy equipment parts where higher hardenability/strength is needed
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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
10million-15million
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Who We are ？ TORICH is an enterprise that has been producing precision steel pipes and steel pipe processing for over 20 years, with a factory area of approximately 20000 square meters The main products produced are carbon steel and alloy steel grade seamless steel pipes, we... Who We are ？ TORICH is an enterprise that has been producing precision steel pipes and steel pipe processing for over 20 years, with a factory area of approximately 20000 square meters The main products produced are carbon steel and alloy steel grade seamless steel pipes, we...
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