LAMBUT HEAVY STEEL FORGING
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Place of Origin: | Zhejiang, China (Mainland) |
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Mandrel or core rod H13 (4Cr5MoSiV1), H11 (4Cr5MoSiV), 28CrNiMoV10, 40CrNiMo, 4340
Quick Detail:
Core rod for seamless pipe making, MPM or PQF, ACCU ROLL, PILGER MILL
Mandrel for seamless pipe making, MPM or PQF, ACCU ROLL, PILGER MILL
AISI H13 core rod for seamless pipe making, MPM or PQF
AISI H13 mandrel for seamless pipe making, MPM or PQF
AISI H13 long shaft
AISI H13 long round bar
Sizes of bar: Ø90mm 500mm, length ≤ 20000mm
Connection: With buttress thread, complying to API 5B
Main thread specifications: 2 3/8″, 2 7/8″, 3 1/2″, 4 1/2″, 5″, 5 1/2″, 6 5/8″, 7 5/8″, 8 5/8", 9 5/8"
Description
Mandrel bar plays a crucial role in producing large diameter seamless pipes in modern industries.
In producing 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 properties, no-metallic inclusion, grain size, microstructure,
ultrasonic test, size precision, surface finish, all these factories of steel are required very strictly.
The Retained MPM Mandrel is the main component of rolling processing of the seamless steel pipe;
the raw material of Retained MPM Mandrel is by using AISI H13 alloy steel with very stringent
requirement on the steel rod’s purity , micro structure uniformity, impact ductility, high-temperature
performance and so on.
There are also stringent requirements on retained MPM mandrel’s roughcast with size, length, weight,
straightness, etc.
Specification |
H13 (4Cr5MoSiV1), H11 (4Cr5MoSiV), 28CrNiMoV10, 40CrNiMo, 4340 |
Standard |
API Spec. 5B |
Size range |
Ø90mm 500mm, length ≤ 20000mm |
Delivery condition |
Forged, annealing - rough machining - magnetic test - heat treatment - ultrasonic test - finish machining - chrome plating(0.055/0.070mm) - thread phosphating |
Surface condition |
Finish machining - chrome plating(0.055/0.070mm) - thread phosphating |
Straightness |
As per drawing or PO |
Size tolerance |
As per drawing or PO |
Certificate |
API Spec.5B |
Application |
Seamless pipe making |
Competitive advantage:
Good quality, good price, quick delivery, good service
Process: steel making (EAF + 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(0.055/0.070mm) - thread phosphating.