Large Diameter Alloy Steel Pipe/Tube
Alloy steel pipes are divided into structural seamless pipes and high-pressure heat-resistant alloy pipes. Mainly different from the production standard of alloy pipe and its industry, the annealing and tempering of alloy pipe changes its mechanical properties. meet the required processing conditions.
Its performance is higher than that of ordinary seamless steel pipes. The chemical composition of alloy pipes contains more Cr, and it has high temperature resistance, low temperature resistance and corrosion resistance.
Large Diameter Alloy steel pipes are widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.
Alloy steel metal is a versatile material that is well-suited to in major industry. Alloy steel is a particularly hard material that withstands heat and resists abrasion, and is available in a number of grades that are each suited to specific applications.
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The main shapes of alloy steel pipes are: round tube, square tube, oval tube, hexagonal tube, rectangular tube.
Large Diameter Alloy steel pipe applications: oil pipes, boiler pipes, automobile steel pipes, straight seam steel pipes for ships, straight seam steel pipes for piling, ventilation pipes, tunnel pipes, natural gas pipes, grouting pipes, anti-corrosion steel pipes, liquid seamless steel pipes, fertilizer special pipes wait.
Large Diameter Alloy steel pipe process includes: cold rolled alloy steel pipe, cold drawn alloy steel pipe, finish rolled alloy steel pipe, cold rolled alloy steel pipe.
Large Diameter Alloy steel types include: seamless alloy steel pipe, welded alloy steel pipe, precision alloy steel pipe, precision drawn alloy steel pipe, thick-walled alloy steel pipe, spiral alloy steel pipe, large-diameter alloy steel pipe, hollow alloy steel pipe, thin-walled alloy steel pipe.
| ISO | гOCT | DIN | US | JIS | UK | FR | ||
| ASTM | UNS | AISI | BS | NF | ||||
| 20Mn6 | 20г2 | 20Mn5 | G13200 | 1320 | SMn420 | 150M19 | 20M5 | |
| 28Mn6 | 30г2 | 28Mn6 | G13300 | 1330 | SMn433 | 150M28 | 32M5 | |
| 36Mn6 | 35г2 | 36Mn6 | G13350 | 1335 | SMn433 | 150M36 | 35M5 | |
| 42Mn6 | 40г2 | G13400 | 1340 | SMn438 | 40M5 | |||
| 45г2 | 46Mn7 | G13450 | 1345 | SMn443 | 45M5 | |||
| 50г2 | 50Mn7 | 55M5 | ||||||
| 17MnV6 | ||||||||
| 15X | 15Cr3 | G51150 | 5150 | SCr415 | 527A17 | 12C3 | ||
| 15XA | ||||||||
| 20Cr4 | 20X | 20Cr4 | G51200 | 5120 | SCr420 | 527A19 | 18C3 | |
| 30X | 28Cr4 | G51300 | 5130 | SCr430 | 530A30 | 28C4 | ||
| 34Cr4 | 35X | 34Cr4 | G513500 | 5135 | SCr435 | 530A36 | 38C4 | |
| 41Cr | 40X | 41Cr4 | G51400 | 5140 | SCr440 | 530A40 | 42C4 | |
| 45X | G51450 | 5145 | SCr445 | 45C4 | ||||
| 50X | G51500 | 5150 | 50C4 | |||||
| 38XC | ||||||||
| 12XM | 12CrMo44 | 12CD4 | ||||||
| 15XM | 15CrMo5 | SCM415 | 15CD4.05 | |||||
| 18CrMo4 | 20XM | 20CrMo4 | G41190 | 4119 | SCM420 | CDS12 | 18CD4 | |
| 30XM | G41300 | 4130 | SCM430 | CDS13 | 30CD4 | |||
| 34CrMo4 | 35XM | 34CrMo4 | G41350 | 4135 | SCM435 | 708A37 | 34CD4 | |
| 42CrMo4 | 38XM | 42CrMo4 | G41400 | 4140 | SCM440 | 708A40 | 42CD4 | |
| 12XMф | ||||||||
| 35XMф | 35CrMoV5 | |||||||
| 12X1Mф | 13CrMoV4·2 | |||||||
| 25X2MфA | 24CrMoV5·5 | |||||||
| 25X2M1фA | ||||||||
| 20X3MBф | 21CrVMoW12 | (SAE)6470E | SACM645 | 905M35 | 40CAD6·12 | |||
| 41CrA1Mo74 | 38XM1фA | 41CrA1Mo7 | G61200 | 6120 | ||||
| 20Xф | 21CrV4 | (SAE)6140 | ||||||
| 40XфA | 42CrV6 | |||||||
| 51CrV4 | 50XфA | 50CrV4 | G61500 | 6150 | SUP10 | 735A50 | 50CrV4 | |
| 15Xг | 16MnCr5 | 16MC5 | ||||||
| 20MnCr5 | 20Xг | 20MnCr5 | G51200 | 5120 | SMnC420 | 20MC5 | ||
| 40Xг | 5140 | SMnC443 | ||||||
| 20Xгс | ||||||||
| 25Xгс | ||||||||
| 30Xгс | ||||||||
| 30XгсA | ||||||||
| 35XгсA | ||||||||
| 25XгM | 20CrMo5 | 4119 | SCM421 | 708M40 | 42CD4 | |||
| 38XгM | SCM440 | |||||||
| 18XгT | ||||||||
| 30XгT | 30MnCrTi4 | |||||||
| 20XH | 20NiCr6 | 3120 | 637M17 | 20NC6 | ||||
| 40XH | 40NiCr6 | G31400 | 3140 | SNC236 | 640M40 | 35NC6 | ||
| 45XH | 45NiCr6 | G31450 | 3145 | |||||
| 50XH | 3150 | |||||||
| 12XH2 | 14NiCr10 | 3215 | SNC415 | 14NC11 | ||||
| 15CrNi13 | 12XH3A | 14NiCr14 | 3415 | SNC815 | 655M13 | 14NC12 | ||
| 20XH3A | 22NiCr14 | 20NC11 | ||||||
| 30XH3A | 31NiCr14 | 3435 | SNC631 | 653M31 | 30NC12 | |||
| 37XH3 | 35NiCr18 | 3335 | SNC836 | 35NC15 | ||||
| 12X2H4A | 14NiCr18 | G33106 | 3310 | 659M15 | 12NV15 | |||
| 20X2H4A | 3320 | 20NC14 | ||||||
| 20NiCrMo2 | 20XHM | 21NiCrMo2 | G86200 | 8620 | SNCM220 | 805M20 | 20NCD2 | |
| 40XHMA | 36NiCrMo4 | G43400 | 4340 | SNCM439 | 817M40 | 40NCD3 | ||
| 45XMфA | SNCM447 | |||||||
| 18X2H4BA | ||||||||
| 25X2H4BA | ||||||||
| NO | China | Russia | America | Britian | Japan | France | German |
| GB | ГОСТ | ASTM | BS | JIS | NF | DIN | |
| 1 |
30Mn2
|
30Г2 | 1330 | 150M28 | SMn433H | 32M5 | 30Mn5 |
| 2 | 35Mn2 | 35Г2 | 1335 | 150M36 | SMn438(H) | 35M5 | 36Mn5 |
| 3 | 40Mn2 | 40Г2 | 1340 | SMn443 | 40M5 | ||
| 4 | 45Mn2 | 45Г2 | 1345 | SMn443 | 46Mn7 | ||
| 5 | 50Mn2 | 50Г2 | ~55M5 | ||||
| 6 | 20MnV | 20MnV6 | |||||
| 7 | 35SiMn | 35CГ | En46 | 37MnSi5 | |||
| 8 | 42SiMn | 35CГ | En46 | 46MnSi4 | |||
| 9 | 40B | TS14B35 | |||||
| 10 | 45B | 50B46H | |||||
| 11 | 40MnB | 50B40 | |||||
| 12 | 45MnB | 50B44 | |||||
| 13 | 15Cr | 15X | 5115 | 523M15 | SCr415(H) | 12C3 | 15Cr3 |
| 14 | 20Cr | 20X | 5120 | 527A19 | SCr420H | 18C3 | 20Cr4 |
| 15 | 30Cr | 30X | 5130 | 530A30 | SCr430 | 28Cr4 | |
| 16 | 35Cr | 35X | 5132 | 530A36 | SCr430(H) | 32C4 | 34Cr4 |
| 17 | 40Cr | 40X | 5140 | 520M40 | SCr440 | 42C4 | 41Cr4 |
| 18 | 45Cr | 45X | 51,455,147 | 534A99 | SCr445 | 45C4 | |
| 19 | 38CrSi | 38XC | |||||
| 20 | 12CrMo | 12XM | 620Cr.B | 12CD4 | 13CrMo44 | ||
| 21 | 15CrMo | 15XM | A-387Cr.B | 1653 | STC42 | 12CD4 | 16CrMo44 |
| 22 | STT42 | ||||||
| 23 | STB42 | ||||||
| 24 | 20CrMo | 20XM | 41,194,118 | CDS12 | SCT42 | 18CD4 | 20CrMo44 |
| 25 | CDS110 | STT42 | |||||
| 26 | STB42 | ||||||
| 27 | 25CrMo | 4125 | En20A | 25CD4 | 25CrMo4 | ||
| 28 | 30CrMo | 30XM | 4130 | 1717COS110 | SCM420 | 30CD4 | |
| 29 | 42CrMo | 4140 | 708A42 | 42CD4 | 42CrMo4 | ||
| 30 | 708M40 | ||||||
| 31 | 35CrMo | 35XM | 4135 | 708A37 | SCM3 | 35CD4 | 34CrMo4 |
| 32 | 12CrMoV | 12XMΦ | |||||
| 33 | 12Cr1MoV | 12X1MΦ | 13CrMoV42 | ||||
| 34 | 25Cr2Mo1VA | 25X2M1ΦA | |||||
| 35 | 20CrV | 20XΦ | 6120 | 22CrV4 | |||
| 36 | 40CrV | 40XΦA | 6140 | 42CrV6 | |||
| 37 | 50CrVA | 50XΦA | 6150 | 735A30 | SUP10 | 50CV4 | 50CrV4 |
| 38 | 15CrMn | 15XГ,18XГ | |||||
| 39 | 20CrMn | 20XГCA | 5152 | 527A60 | SUP9 | ||
| 40 | 30CrMnSiA | 30XГCA | |||||
| 41 | 40CrNi | 40XH | 3140H | 640M40 | SNC236 | 40NiCr6 | |
| 42 | 20CrNi3A | 20XH3A | 3316 | 20NC11 | 20NiCr14 | ||
| 43 | 30CrNi3A | 30XH3A | 3325 | 653M31 | SNC631H | 28NiCr10 | |
| 44 | 3330 | SNC631 | |||||
| 45 | 20MnMoB | 80B20 | |||||
| 46 | 38CrMoAlA | 38XMIOA | 905M39 | SACM645 | 40CAD6.12 | 41CrAlMo07 | |
| 47 | 40CrNiMoA | 40XHMA | 4340 | 871M40 | SNCM439 | 40NiCrMo22 |
| Outer Diameter(mm) | Wall Thickness(mm) | Length(mm) | |
| Hot-Rolled | 20 – 1200 | 2 – 500 | 100-18000 |
| Cold-Rolled | 1 – 300 | 0.5 – 100 | 10 – 8000 |
| Forging | 100-2000 | 10 – 900 | 25 – 12000 |
| Depending on your needs | |||
We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.
Metalworking Services
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Tube and Plate Drilling
Heavy Forging Press Capacity
Our heavy-duty forging presses support open-die forging and deformation of large-section forgings, including discs, shafts, blocks, and custom components. This capability enables us to meet the demanding forming requirements of heavy industrial applications.
Heat Treatment Capability
Heat treatment is a critical step in achieving the mechanical properties required for heavy-duty forgings. Our process capabilities meet the strength, toughness, and structural stability requirements for forged components used under demanding operating conditions.
Heavy Shaft Machining
We offer machining capabilities for large forged shafts and long cylindrical components, supporting both rough and finish machining. This capacity is suitable for stepped shafts, rotor shafts, rollers, and other heavy-duty forged shaft components.
Ring Forging Machining
Our machining facilities are capable of handling large ring-shaped forgings and circular parts that require precise turning, face machining, boring, and contour control. This capability is suitable for industrial ring blanks, heavy-duty circular parts, and machined ring forgings.
Cylindrical Forging Machining
We offer machining solutions for heavy-duty cylindrical, hollow, and tubular forgings. This capability supports the machining of sleeves, cylinders, and other thick-walled forged components used in pressure vessels, rotating systems, and general industrial applications.
Inspection & Testing
Quality control is integrated into our production process through the inspection and testing of forged and machined parts. Our capabilities help verify the dimensional accuracy, condition, and quality consistency of industrial forgings prior to delivery.
Packing & Delivery
Finished forgings are properly protected and packaged to minimize the risk of damage during storage and transportation. Our packaging methods ensure the safe domestic delivery and export shipment of machined and high-value forged components.
