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| Categories | Forged Steel Rings |
|---|---|
| Brand Name: | UST |
| Model Number: | OD up to 8,000mm; ID up to 7,800mm; Thickness up to 500mm |
| Certification: | ISO9001 |
| Place of Origin: | CHINA |
| MOQ: | MOQ: 1 piece |
| Price: | USD 80- 1200/piece |
| Supply Ability: | 800 piece/month |
| Delivery Time: | Within 5-35 days |
| Packaging Details: | Wooden case or according to customers' requirement |
| Key words: | forged steel rings |
| Quality Standard: | ASTM, EN, JIS |
| Surface: | Black, Smooth |
| Payment: | T/T or L/C |
| UT: | ASTM A 388 or according to customers' requirement |
| Size: | OD up to 8,000mm; ID up to 7,800mm; Thickness up to 500mm |
| Company Info. |
| SHANGHAI UNITE STEEL |
| View Contact Details |
| Product List |
SAE4145/SCM445 /50CrMo4/din 1.7228 Professional alloy hot forged steel rings
Application:
Comparision of Steel Grades:
| GB 35CrMo | Comparision of steel grades | |
| JIS | 4145H | |
Chemical Composition:
| Standard | Grade | C | Si | Mn | P/S | Cr | Mo |
| GB | 45CrMnMo | 0.42-0.48 | 0.15-0.30 | 0.75-1.20 | 0.035(MAX) | 0.75-1.20 | 0.35-0.45 |
Steel for petroleum is required to have high purity, good
obdurability and equal direction capacity. EX30, SN2025 steel is
mainly used for roller bit of petroleum drill bits, 37CrMnMo(4137H)
is used for manufacturing petroleum drill rod joint, 4145H is
mainly used for petroleum drill rod and drill spindle.
Processing route:
EAF + LF + VD + ingot + hot forged+ heat treatment
Test:




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