Mandrel bar
Seamless pipe manufacturing
Mandrel bar is the important parts in producing large diameter seamless pipe. In production the mandrel bar is under strong and complicate strength, compressing touching stress and high temperature cold-hot yield stress, so it strictly requires all the factors of steel, including chemical components, mechanical properties, no-metallic inclusion, grain size, microstructure, ultrasonic test, size precision, surface finish. The main material for the mandrel bar is H13(4Cr5MoSiV1)
Chemical component
AISI H13(4Cr5MoSiV1)
C | Si | Mn | S | P | Cr | Mo | Ni | V | H | O |
0.32- 0.45 | 0.80- 1.20 | 0.20- 0.50 | ≤0.008 | 0.012 | 4.75- 5.50 | 1.10- 1.75 | ≤0.25 | 0.80- 1.20 | ≤2PPm | ≤20PPm |
Mechanical Property
Spec. | Tensile strength / Mpa | Yield strength / Mpa | Elongation / % | Reduction of area / % | Impact value / J | Hardness |
≤200 | 1127-1274 | ≥931 | ≥8 | ≥25 | ≥20 | 60-62 |
≥200 | 1078-1274 | ≥882 | ≥8 | ≥25 | ≥20 | 60-62 |
Forged gear
As the manufacturer, we produce below items:
-DST tools- Full bore retrievable packer, circulating valve, select tester valve,safety valve etc.
-Surface well testing equipment - Flowhead, SSV, ESD,Separator etc.
-Wellhead equipment such as BOP, X-mas tree, Choke manifold, kill manifold, drilling spool, casing head and other valve & flanges
-Downhole tools such as stabilizer, stabilizer forging, reamer, X-over sub and etc
As the distributor, we are working with large rig companies and heavy equipment manufacturers for the below products:
-Rig parts from RG,BOMCO,SJ,Hong Hua,KR etc,such as mud pump,rotary table, hook & block, swivel, crown block and consumable parts
- BOP and wellhead parts from Rongsheng,Shenkai
- Pipe- Tubing, Casing, seamless pipe
- Handling tools and Fishing tools
Should any items be of interest to you, contact us freely
