Mandral Bar

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Product Details

Place of Origin:	Liaoning in China

Specifications

Mandrel bar plays a crucial role in producing large diameter seamless pipes in modern industries. In production line, it have to bear strong and complicate stretch, compressing touching stress and high temperature cold-hot yield stress under high speed cycling. Under these circumstance, chemical components, mechanical propertied, no-metallic inclusion, grain size, microstructure, ultrasonic test, size precision, surface finish, all these factories of steel are required very strictly. Mandrel bar is made from H13(4Cr5MoSiV1),

With annual output of 15 thousand tons, its quality and service life have reached to world level of that.

Our company is capable of producing a series of mandrel, such as MPM, PQF, FQM, with the diameter of Φ 80~350mm, the length of 2500-17500mm.

Equipment advantage: steel making (EBT+LF(VD)+ESR)-forging(formed by hydraulic press machine + forged by rotary forging machine)-annealing-rough machining – magnetic test-heat treatment-ultrasonic test-finish machining-chrome plating-thread phosphating.

Chemical Components of 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	≤2PPm

Mechanical Property

SIZE	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)	Reduction of Area (%)	Impact Value (J)	Hardness (HRC)
≤200mm	1127-1274	≥931	≥8	≥25	≥20	60-62
≥200mm	1078-1274	≥882	≥8	≥25	≥20	60-62

Service Process

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Service Guarantee

Free Service Charge

ECVV doesn't charge any service fee to Buyers for buying this product.
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ECVV is responsible for supply, and provides product quality inspection, fund supervision and supply chain services.
Product Quality Commitment

ECVV China Sourcing Agent will assess the reputation and supply ability of the factory and conduct field trips to select the high-quality Chinese factories for buyers.
Deposit Service Commitments

In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.