TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 5000Tons per Year |
| Delivery Time | 30-45 work days |
| Packaging Details | In bundles or in wooden boxes. |
| Material | Seamless carbon steel and alloy steel mechanical tubing |
| Standard | ASTM A519 / ASME SA519 |
| Main Grades | 1045, 4130, 4140; optional 1020, 1026 |
| Outside Diameter | 1–350 mm, custom sizes available |
| Wall Thickness | 1–12 m, customized fixed length or random length |
| Tolerance Range | OD and wall thickness can be controlled to ±0.10 mm for precision sizes; ASTM A519 tolerance tables apply by OD, wall, and thermal treatment condition |
| Straightness | Typically ≤0.5–1.0 mm/m for precision cold-drawn tubes; stricter control available by agreement |
| Heat Treatment | As drawn, stress relieved, annealed, normalized, quenched and tempered |
| Brand Name | TORICH |
| Model Number | ASTM A519 |
| Certification | ISO9001, ISO14001, TS16949 |
| Place of Origin | ZHEJIANG, CHINA |
View Detail Information
Explore similar products
Carbon Steel Cold Drawn Bright Shock Absorber Tube Precision Steel Tube for
ERW Precision Steel Tubes ERW Precision Tubes
High Tolerance Seamless Steel Tubes / Precision Steel Pipe Pipe For Automotive
Torich GB/T13793 Q195 Welded Steel Tube ERW Precision Steel Tube
Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 5000Tons per Year |
| Delivery Time | 30-45 work days | Packaging Details | In bundles or in wooden boxes. |
| Material | Seamless carbon steel and alloy steel mechanical tubing | Standard | ASTM A519 / ASME SA519 |
| Main Grades | 1045, 4130, 4140; optional 1020, 1026 | Outside Diameter | 1–350 mm, custom sizes available |
| Wall Thickness | 1–12 m, customized fixed length or random length | Tolerance Range | OD and wall thickness can be controlled to ±0.10 mm for precision sizes; ASTM A519 tolerance tables apply by OD, wall, and thermal treatment condition |
| Straightness | Typically ≤0.5–1.0 mm/m for precision cold-drawn tubes; stricter control available by agreement | Heat Treatment | As drawn, stress relieved, annealed, normalized, quenched and tempered |
| Brand Name | TORICH | Model Number | ASTM A519 |
| Certification | ISO9001, ISO14001, TS16949 | Place of Origin | ZHEJIANG, CHINA |
| High Light | precision steel pipe ，precision seamless pipe | ||
| Item | Description |
|---|---|
| Material | Seamless carbon steel and alloy steel mechanical tubing |
| Standard | ASTM A519 / ASME SA519 |
| Main Grades | 1045, 4130, 4140; optional 1020, 1026 |
| Outside Diameter | 1-350 mm, custom sizes available |
| Wall Thickness | 1-50 mm, depending on OD and production route |
| Length | 1-12 m, customized fixed length or random length |
| Tolerance Range | OD and wall thickness can be controlled to ±0.10 mm for precision sizes; ASTM A519 tolerance tables apply by OD, wall, and thermal treatment condition |
| Straightness | Typically ≤0.5-1.0 mm/m for precision cold-drawn tubes; stricter control available by agreement |
| Surface Condition | Cold drawn, cold rolled, bright finish, oiled, phosphate, anti-rust oil, plastic end caps |
| Heat Treatment | As drawn, stress relieved, annealed, normalized, quenched and tempered |
| Manufacturing Technique | Hot worked followed by cold drawing or cold rolling |
| Testing | Tensile test, hardness test, flaring test, flange test, flattening test, reverse flattening test, hydrostatic test, or nondestructive electric test |
| Characteristic | Technical Meaning |
|---|---|
| Seamless structure | No weld seam, suitable for machined mechanical parts where uniform strength and concentricity are required. |
| Precision dimensional control | Cold-drawn ASTM A519 tubing can be supplied with close OD/ID tolerance; commercial A519 tolerance references show OD/ID tolerances varying by OD range and final thermal condition. |
| Grade-specific strength selection | 1045 provides medium-carbon strength and machinability; 4130 provides Cr-Mo toughness with better weldability than 4140; 4140 provides higher hardenability and strength after heat treatment. |
| Controlled heat-treatment condition | HR, CW, SR, A, N, or Q&T condition must be defined because mechanical properties change significantly with final processing. |
| Machining suitability | Suitable for turning, boring, honing, grinding, and CNC machining of precision sleeves, shafts, bushings, and bearing-related parts. |
| Surface protection | Anti-rust oil and plastic end caps reduce oxidation and protect the tube ends during sea shipment and warehouse storage. |
| Professional Concern | Our Solution |
|---|---|
| Buyers often need stable OD/ID tolerance for CNC machining, not only a nominal tube size. | We confirm OD, ID, wall thickness, ovality, straightness, and final machining allowance before production. For precision sizes, OD and wall tolerance can be controlled to ±0.10 mm when technically feasible. |
| 1045, 4130, and 4140 mechanical properties vary greatly by heat treatment. | We identify the required condition before quotation: hot rolled, cold worked, stress relieved, annealed, normalized, or quenched and tempered. MTC values are supplied by heat number, and third-party inspection can be arranged. |
| Cr-Mo grades require reliable traceability and testing for critical mechanical parts. | Tubes can be supplied with chemical analysis, tensile test, hardness test, NDT, hydrostatic test, and end protection. ASTM A519 permits supplementary requirements when requested in the purchase order. |
| Standard | Brief Description |
|---|---|
| ASTM A519 | Seamless carbon and alloy steel mechanical tubing, hot-finished or cold-finished. |
| ASME SA519 | ASME equivalent specification for seamless carbon and alloy steel mechanical tubing. |
| EN 10305-1 | European precision seamless cold-drawn steel tubes for precision applications. |
| EN 10297-1 | Seamless circular steel tubes for mechanical and general engineering purposes. |
| JIS G3445 | Japanese carbon steel tubes for machine structural purposes. |
| GB/T 3639 | Chinese cold-drawn or cold-rolled precision seamless steel tubes. |
| GB/T 8162 | Chinese seamless steel tubes for structural purposes. |
| GOST 8734 | Russian cold-deformed seamless steel tubes. |
| Grade | C % | Mn % | P Max % | S Max % | Si % | Cr % | Mo % |
|---|---|---|---|---|---|---|---|
| 1020 | 0.18-0.23 | 0.30-0.60 | 0.040 | 0.050 | -- | -- | -- |
| 1026 | 0.22-0.28 | 0.60-0.90 | 0.040 | 0.050 | -- | -- | -- |
| 1045 | 0.43-0.50 | 0.60-0.90 | 0.040 | 0.050 | -- | -- | -- |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| Grade / Condition | Tensile Strength Min | Yield Strength Min | Elongation Min | Hardness Typical |
|---|---|---|---|---|
| 1020 Cold Drawn | 420 MPa / 61 ksi | 350 MPa / 51 ksi | 10% | HRB 75-85 |
| 1026 Cold Drawn | 483 MPa / 70 ksi | 414 MPa / 60 ksi | 10% | HRB 80-90 |
| 1045 Cold Worked | 621 MPa / 90 ksi | 552 MPa / 80 ksi | 5% | HRB 90 |
| 4130 Stress Relieved | 724 MPa / 105 ksi | 586 MPa / 85 ksi | 10% | HRB 95 |
| 4140 Stress Relieved | 855 MPa / 120 ksi | 689 MPa / 100 ksi | 10% | HRB 100 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
A Professional Steel Pipes Materials Inventor, Manufacturer And Solution Provider TORICH INTERNATIONAL LIMITED is a professional inventor, manufacturer, and solution provider of steel pipe materials, integrating production and international trade, specializing in various precision steel pipes. Esta... A Professional Steel Pipes Materials Inventor, Manufacturer And Solution Provider TORICH INTERNATIONAL LIMITED is a professional inventor, manufacturer, and solution provider of steel pipe materials, integrating production and international trade, specializing in various precision steel pipes. Esta...
Get in touch with us
Leave a Message, we will call you back quickly!