Audited Supplier
1256
Metal
Forging
Pressure Casting
Machinery Parts
Steel
Quenching
Passivation
+/-0.1mm
AISI
CE, RoHS, ISO 9001:2000, ISO 9001:2008
Hot Forging - Heat Treatment - CNC Machining
EXW,Fob,CIF,DDP,DDU
Min Dia100mm, Max Dia 6000mm. Max Length 6000mm
10kg~10ton
Ring, Shaft, Round Bar, Block, Sleeve, Wheel, Cyli
18 Months
no
According Customers' Requirements
large dimensions
China
Product Description
Best Price 4140 Alloy Steel Pipe Hollow Bar Steel Tube
| 1, Raw material: | use ESR ingot. ESR need to melt twice, secondary refining process.Non metallic inclusions in steel are absorbed by slag. |
| 2, Heat | Natural gas heating furnaces are monitored and controlled by computer programs to ensure precise heating within set time and temperature range as required. |
| 3, Forging | Calculate the appropriate forging ratio based on the shape to avoid material waste. Select appropriate equipment for forging. Make the product undergo complete forging and pressing. |
| 4, Normalized: | can improve the toughness of steel |
| 5, Aligning | For shaft, roller, round bar |
| 6, Pre-machining | Remove surface oxide scale and inspect for defects. More conducive to complete immersion during tempering. |
| 7, Make UT | Qualified technicians shall conduct ultrasonic testing operations. Ensure that the product is 100% inspected and qualified. Magnetic particle testing and penetration testing can also be performed. |
| 8, Heat treatment: | Quenching&Tempering, to meet mechanical performance requirements.We will manufacture samples and continuously adjust the furnace temperature to meet the required performance requirements. Ensure 100% success data is obtained before mass production. |
| 9,Mechanical performance inspection and twice UP inspection | Hardness,Tensile strength,Yield Strength,Percentage elongation,Impact |
| 10,Precision machining, to achieve dimenssion on drawings. | We will pay attention to the tolerance requirements for each dimension. Surface smoothness requirements. The depth and type of drilling. Geometric tolerances, parallelism, perpendicularity, runout tolerances, concentricity, etc. |
| 11,Packing and delivery. | We will choose packaging methods that can protect the product and are suitable for sea transportation. With a complete supply chain, products can be transported to your factory by sea or rail. |
| Stainless Steel: | SS201,SS301, SS303, SS304, SS316, SS316L,SS416 ,AISI 440C,17-4PH etc. |
| Steel/Alloy: | mild steel, Carbon steel, 4140, 4340,65Mn,60Si2Mn, Q235, Q345B, 1020steel, 1045steel,A106,A105, A570-50,CR-MO4130,Astm A487 grade 9A, 52100 Bearing steel ,S45c, Sm490A, AVP/S235JRG2,DD14, 1.0037 ,etc, ASTM 1197-47, 25CRMO4V,SCM435, 11SMNPB30,1.0718,.A36 |
| Brass: | HPb63, HPb62, HPb61, HPb59, H59, H62, H68, H80 ,Bronze 660, C93200,Bronze CDA873 or 956,CDA873,C95600,MAILEABLE IRON ASTM A47-77, etc. |
| Copper: | C11000,C12000,C12000 C36000,C100 etc. |
| Aluminum: | AL1100,AL6061, Al6063-T6, AL6082, AL7075, AL5052, A380 etc. |
| Titanium: | CP Ti,Ti-6Al-4V, Ti-6Al-4V Eli,Ti-3Al-2.5V,Ti-5Al-2.5Sn, Ti-5Al-2.5Sn Eli,Ti-0.05Pd, Ti-0.2Pd, Ti-6Al-7Nb,Ti-13Nb-13Zr,Ti-0.1Ru,Ti-3Al-8V-6Cr-4Mo-4Zr,Ti-6Al-4V-0.1Ru,Etc. |
| The Surface Treatment: | Zinc plating, Chrome plating, Nickel plating, Tin plating, Polishing, Anodizing, Power-coating, Dacromet, Oxide black, Sandblast Anodizing, Electroless nickel, Fe/Zn8/C PER ISO 2081, etc. |
| Design: | We use the most advanced mould design software Auto CAD, Pro/E, Solidworks, UG (dwg, dxf, IGS, STP, X-T) |
| Manufacture: | We use advanced technology, unmatched skill, professional and advanced equipment size range from 10kg -10T, and experienced technicians to fit our customers requirements, like tooling manufacturing,forging CNC machining, Assembling and surface treatment service |
| Process and Capability: | Cnc machining, Threading, Welding, Tapping, Riveting, Grinding, Laser cutting,Metal Fabrication,forming,spinning, CNC Punching, Plasma cutting, Goffered, Stretch forming ,Tig/Mig Welding,Assembling, Shearing, Blanking, CNC Bending............ |
| Price Terms: | Fob Ningbo or Shanghai or any other port in CHINA. EXW, CIF, DDP, DDU. We have a mature supply chain and can provide door-to-door services. |
| Lead time: | 20-50days based on the different products |
| Packaging: | Wooden package and canton case or as per customers' requirement |
| Certification: | ISO9001:2018 , SGS , TS16949,API 8C |
| Industry: | these parts are used in hydraulic presses, press line automation and die handling equipment,Automotive, Electrical, Building, Furniture, Machine assembly, Computer, Air industry , Oil field Equipments, Marine equipments, Mine equipment,Agricultural Machines,Transportation Equipments, OEM/ODM Electronics...... |
