| Type: | Seamless |
|---|---|
| Technique: | Cold Drawn |
| Material: | Carbon Steel |
| Surface Treatment: | Oil, Bared, Black Paint, Galvanized |
| Usage: | Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose |
| Section Shape: | Square/Rectangular |
| Samples: |
|---|
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 
Seamless square rectangular steel pipe is a type of square, rectangular steel with a hollow cross-section and no seams around it. Seamless steel pipes are made from steel ingots or solid billets that are perforated into tubes, and then hot rolled, cold rolled, or cold drawn. Seamless steel pipes have a hollow cross-section and are widely used for conveying fluids in pipelines. Compared with solid steel materials such as round steel, steel pipes have a lighter weight when their bending and torsional strength are the same. They are an economic cross-section steel and are widely used in the manufacturing of structural and mechanical components such as petroleum drill pipes, automotive transmission shafts, bicycle frames, and steel scaffolding used in construction.
| C | Si | Mn | P | S | Cu | |
| 08F 1008 1010 SPHE SPHD |
≤0.1 |
≤0.03 | 0.3-0.6 | ≤0.03 | ≤0.05 | ≥0.2 |
| 10# 1010 CK10 S10C S12C |
0.08-0.13 | ≤0.07 | 0.3-0.6 | ≤0.04 | ≤0.05 | ≥0.2 |
| 15# 1015 S15C S17C CK15 |
0.13-0.18 | ≤0.07 | 0.3-0.6 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1020/20#/CK22/C22E/S20C/1.1151/1.0144/ | 0.18-0.23 | 0.17-0.37 | 0.3-0.6 | ≤0.03 | ≤0.05 | ≤0.2 |
| 1025 25# 1.1158 S28C C25 | 0.22-0.28 | 0.17-0.37 | 0.3-0.6 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1030 30# C30 CK30 S30C |
0.28-0.34 | 0.17-0.37 | 0.6-0.9 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1035 35# C35 CK35 S35C | 0.32-0.38 | 0.17-0.37 | 0.6-0.9 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1040/S40C/1.1186/C40E/SK40/1.1189/1.1186 | 0.37-0.44 | 0.17-0.37 | 0.6-0.9 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1045 45# S45C S48C C45 |
0.43-0.5 | 0.17-0.37 | 0.6-0.9 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1050 50# S50C S53C C50 |
0.48-0.55 | 0.17-0.37 | 0.6-0.9 | ≤0.04 | ≤0.05 | ≤0.2 |
| 1055 55# C55 CK55 S55C |
0.5-0.6 | 0.17-0.37 | 0.6-0.9 | ≤0.04 | ≤0.05 | ≥0.2 |
| 1060/60#/1.1221/1.0601/C60E/CK60/S58C | 0.55-0.65 | 0.17-0.37 . |
0.6-0.9 | ≤0.04 | ≤0.05 | ≥0.2 |
| Production Range | Outer Diameter:10-1020mm (0.4 inch - 40.16inch) |
| Wall Thickness:1-200mm (0.04 inch - 7.89 inch) | |
| Material / Grade | Carbon Steel: GB/T 8162 & 8163 & 3639: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C |
| Alloy Steel: GB/T 8162 & 8163 & 3639: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) ASTM A519: 5120, 5140, 4130, 4135, 4140 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420 |
|
| stainless steel: 201 202 301 304 304L 304H 309 309S 310 310S 316 316L 316Ti 321 317 317L 321 329 347 347H 409L 410 410S 420 420JI 420J2 430 431 434 436L 439 441 443 444 S20100, S20200, S30100, S30400, S30403, S30908, S31008, S31600, S31635, SUS304HTB, SUS304LTB,SUS309TB,SUS309STB,SUS310TB,SUS310STB,SUS316TB,SUS316HTB, SUS316HTB, SUS316LTB,SUS316TiTB,SUS317TB,SUS317LTB,SUS836LTB,SUS890LTB,SUS321TB, SUS409LTB, SUS410TB,SUS410TiTB,SUS430TB,SUS430LXTB,SUS430JL1TB,SUS436LTB |
|
| Technique | Cold Drawn / Cold Rolled |
| Shape | Square/Rectangular |
| Further Processing for Steel Tubes | Final Annealing, Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking |
Seamless Steel Pipe/Tube
--Precise custom outer diameter and inner diameter
--Tight tolerances, resulting in reduced machine time / Dimensional accuracy
--Smooth and Clean OD and ID surfaces
--Excellent machining characteristics
--Wider range of physical properties attainable through process and annealing options
1. The purpose of cold drawn seamless rectangular pipe is widely used in industries such as construction, machinery, chemical, light industry, automotive, aerospace, metallurgy, etc. It can be made into pipes of various sizes, shapes, and performance.
2. Seamless cold drawn square pipe is a type of hollow square section lightweight thin-walled steel pipe, also known as steel cold formed profiles. Seamless cold drawn square tubes have a wide range of applications. It is widely used in the manufacturing of structural and mechanical parts, such as petroleum drill pipes, automotive transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are used to manufacture circular parts, which can improve material utilization, simplify manufacturing processes, save materials and processing time, and have been widely used in the manufacturing of steel pipes.
| Out Diameter | Wall Thickness | Square Pipe/Tube(mm) | Rectangular Pipe/Tube(mm) | |||
| Inch | mm | mm | 16×16×0.4~1.5 | 70×70×2.0~6.0 | 10×20×0.6~1.5 | 30×60×1.0~4.5 |
| 1/2 | 21.3 | 0.6-3.0 | 18×18×0.4~1.5 | 75×75×2.0~6.0 | 14×21×0.6~1.5 | 40×50×1.0~4.5 |
| 3/4 | 26.9 | 0.6-3.0 | 20×20×0.4~1.5 | 80×80×2.0~6.0 | 15×30×1.5~1.5 | 40×60×1.0~5.0 |
| 1 | 33.4 | 1.0-3.0 | 25×25×0.6~2.0 | 85×85×2.0~6.0 | 15×38×0.6~1.5 | 40×80×1.5~5.0 |
| 1 1/4 | 42.3 | 1.0-4.0 | 30×30×0.6~4.0 | 95×95×2.0~8.0 | 20×30×0.6~2.0 | 40×100×2.0~5.0 |
| 1 1/2 | 48.3 | 1.0-4.0 | 34×34×1.0~2.0 | 100×100×2.0~8.0 | 20×40×0.8~2.0 | 50×60×2.0~5.0 |
| 2 | 60.3 | 1.5-4.0 | 35×35×1.0~4.0 | 120×120×4.0~8.0 | 20×50×1.0~2.0 | 50×80×2.0~5.0 |
| 2 1/2 | 76.1 | 1.5-4.0 | 38×38×1.0~4.0 | 150×150×6.0~10.0 | 22×35×0.9~2.0 | 50×100×2.0~8.0 |
| 3 | 88.9 | 1.5-9.5 | 40×40×1.0~4.5 | 180×180×6.0~12.0 | 25×40×0.9~3.75 | 60×80×2.0~6.0 |
| 4 | 114.3 | 2.0-9.5 | 44×44×1.0~4.5 | 200×200×6.0~12.0 | 25×65×1.0~2.0 | 80×100×2.0~8.0 |
| 5 | 141.3 | 3.0-9.5 | 45×45×1.0~5.0 | 220×220×6.0~14.0 | 30×40×1.0~3.75 | 120×60×2.5~10.0 |
| 6 | 168.3 | 3.0-12.0 | 50×50×1.0~5.0 | 250×250×6.0~14.0 | 30×45×1.0~3.75 | 120×80×2.5~10.0 |
| 8 | 219.1 | 3.2-12.0 | 60×60×1.5~5.0 | 30×50×1.0~4.0 | ||
| 10 | 273 | 3.2-12.0 | ||||
| 12 | 323.8 | 6.0-15.0 | ||||
| 14 | 355.6 | 8.0-15.0 | ||||
| 16 | 406.4 | 8.0-20.0 | ||||
| diameter d mm |
sign | Heat treatment or condition | tensile strength σb Mpa |
Elongation δ % |
| 9.5~12.7 | 1035-O | · Annealing (O) · |
60~100 | - |
| 9.5~12.7 | 1035-H12 | · Work Hardening -1/4 Hard (H12) · |
80~120 | - |
| 9.5~12.7 | 1035-H22 | · Work Hardening + Incomplete Annealing -1/4 Hard (H22) · |
80~120 | - |
| 9.5~12.7 | 1035-H14 | Work Hardening -1/2 Hard (H14) | 100~140 | - |
| 9.5~12.7 | 1035-H24 | Work hardening + Incomplete Annealing -1/2 hard (H24) | 100~140 | - |
| 9.5~12.7 | 1035-H16 | · Work hardening -3/4 Hard (H16) · |
115~155 | - |
| 9.5~12.7 | 1035-H26 | · Work Hardening + Incomplete Annealing -3/4 Hard (H26) · |
115~155 | - |
| 1.2~2 | 1035-H19 | · Work hardening - Superhard (H19) · |
≥160 | · Mark distance 200mm · ≥1.2 |
| >2~2.5 | ≥175 | ≥1.5 | ||
| >2.5~3.5 | ≥160 | ≥1.5 | ||
| >3.5~5.3 | ≥160 | ≥1.8 | ||
| >5.3~6.5 | ≥155 | ≥2.2 |
| Shear strength and riveting performance of rivet wire | |||||
| Diameter /mm | sign | Heat treatment or condition | shear strengthτ/MPa | · Riveting property · |
|
| · Ratio of specimen protrusion height to diameter · |
· Riveting test time · |
||||
| 3~20 | 1035-H14 | · Work Hardening -1/2 Hard (H14) · |
≥60 | - | - |
Packaging and delivery of square and rectangular hollow section pipes and steel pipes:
1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawin
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}