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 |
| Application | industry |
| Alloy or not | Non-alloy,Is Alloy |
| Thickness | 0.5 - 20 mm |
| Section shape | rectangular/ square/ round |
| Grade | 10 20 35 45 |
| Special pipe | precision seamless pipe |
| Secondary or not | Non-secondary |
| Outer diameter(round) | 20 - 480 mm |
| Length | 1-12m/as customers' requests |
| Product name | Precision seamless honed steel tube for cylinder |
| Material | Carbon steel |
| Shape | Round/Square/Rectangular |
| Brand Name | TORICH |
| Model Number | GOST 8734-75 |
| Certification | ISO9001, ISO14001, TS16949 |
| Place of Origin | ISO9001 ISO 14001 TS16949 |
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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 | Application | industry |
| Alloy or not | Non-alloy,Is Alloy | Thickness | 0.5 - 20 mm |
| Section shape | rectangular/ square/ round | Grade | 10 20 35 45 |
| Special pipe | precision seamless pipe | Secondary or not | Non-secondary |
| Outer diameter(round) | 20 - 480 mm | Length | 1-12m/as customers' requests |
| Product name | Precision seamless honed steel tube for cylinder | Material | Carbon steel |
| Shape | Round/Square/Rectangular | Brand Name | TORICH |
| Model Number | GOST 8734-75 | Certification | ISO9001, ISO14001, TS16949 |
| Place of Origin | ISO9001 ISO 14001 TS16949 |
GOST 8734-75 seamless cold formed steel pipe is a carbon steel seamless tube produced by cold drawing or cold rolling to achieve tighter dimensional tolerance, smoother surface quality, and better consistency than conventional hot-finished tubing. It is widely used where buyers need reliable strength, clean internal and external surfaces, and stable OD/WT control for further machining, hydraulic use, and structural/mechanical assemblies. GOST 8734-75 defines the size range, while technical delivery requirements are typically applied together with GOST 8733-74.
Standard: GOST 8734-75
Related technical requirements: GOST 8733-74
Product type: Seamless cold formed steel tube
Manufacturing process: Cold drawn / cold rolled seamless
Outside diameter range: 5-250 mm
Wall thickness range: 0.3-24 mm
Length:
Random length: 1.5-11.5 m
Fixed length: 4.5-9 m
Multiple length: 1.5-9 m
Wall classification:
Extra-thin wall
Thin wall
Thick wall
Extra-thick wall
Common steel grades: 10, 20, 35, 45, St3sp, and other agreed grades depending on end use and supply condition.
High dimensional precision from cold-forming
Smooth, clean surface suitable for machining and coating
Seamless structure for dependable pressure integrity
Uniform wall thickness and improved concentricity
Good machinability across common carbon steel grades
Wide grade selection for strength, formability, and weldability balance
Suitable for hydraulic, mechanical, automotive, and general engineering service.
Buyers worry about dimensional tolerance and fit-up consistency.
We supply cold formed seamless tubes specifically for applications where OD/WT consistency matters. Compared with hot-finished tube, cold drawn tubing offers tighter dimensional accuracy, better wall uniformity, and smoother surfaces, which helps reduce secondary machining and assembly deviation.
Buyers worry about surface quality for hydraulic and precision parts.
GOST 8734-75 products are widely selected for hydraulic systems, mechanical structures, and precision-use components because cold forming provides a cleaner surface and improved finish. This is especially useful for cylinders, sleeves, bushings, and machined assemblies where surface defects increase rework risk.
Buyers worry about standard compliance and material traceability.
We organize production around the GOST route clearly: GOST 8734-75 for dimensions and assortment, GOST 8733-74 for technical requirements, and the corresponding grade standards such as GOST 1050 or GOST 380 for chemistry and mechanical properties. This makes procurement documentation, inspection records, and material substitution much easier for international projects.
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu | As |
|---|---|---|---|---|---|---|---|---|---|
| 10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.040 | ≤0.15 | ≤0.30 | ≤0.30 | — |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.040 | ≤0.25 | ≤0.30 | ≤0.30 | — |
| 35 | 0.32-0.40 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.035 | ≤0.25 | ≤0.30 | ≤0.30 | ≤0.08 |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.040 | ≤0.25 | ≤0.25 | ≤0.25 | ≤0.08 |
| St3sp | 0.14-0.22 | 0.15-0.30 | 0.40-0.65 | ≤0.040 | ≤0.050 | ≤0.30 | ≤0.30 | ≤0.30 | — |
| Grade | Yield Strength / Creep Limit (MPa) | Tensile Strength (MPa) | Elongation (%) | Reduction of Area (%) |
|---|---|---|---|---|
| 10 | ≥205 | ≥330 | ≥31 | ≥55 |
| 20 | ≥245 | ≥410 | ≥25 | ≥55 |
| 35 | ≥315 | ≥530 | ≥20 | ≥45 |
| 45 | ≥355 | ≥600 | ≥16 | ≥40 |
| St3sp* | ≥245 (up to 20 mm) | 370-480 | ≥26 (up to 20 mm) | — |
GOST: GOST 8734-75 for dimensions and assortment; GOST 8733-74 for technical requirements of cold-finished seamless steel tubes.
ASTM: ASTM A519/A519M covers seamless carbon and alloy steel mechanical tubing, including cold-finished tubing.
EN: EN 10305-1 covers seamless cold drawn precision steel tubes for precision applications.
JIS: JIS G3445 covers carbon steel tubes for machine structural purposes.
GB: GB/T 3639-2021 covers seamless cold-drawn or cold-rolled steel tubes for precision applications.
GOST 8734-75 cold formed seamless carbon steel pipe is mainly used in industries that require dimensional precision, smooth surfaces, and dependable mechanical performance. Common sectors include mechanical engineering, hydraulic and pneumatic systems, automotive parts, precision machining, and general equipment manufacturing.
Hydraulic and pneumatic systems: cylinder tubes, sleeves, line tubing, precision fluid power components
Automotive manufacturing: shock absorber parts, bushings, steering and chassis components, machined blanks
Mechanical engineering: shafts, spacers, rollers, sleeves, bearing seats, structural machine parts
General fabrication: precision structural members, instrument housings, connectors, custom machined tubular parts
Equipment manufacturing: conveyors, agricultural machinery components, industrial assemblies, tooling bodies
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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