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Quick Details

Structure: Worm
Material: Steel
Coatings: Black Oxide
Torque Capacity: according to the order
Length: no more than 15m
Model Number: 10m
Place of Origin: China (Mainland)
Brand Name: ZYZXDY
OD: 100mm to 1000mm
weight: 20 ton

Specifications

Product description:
Certificate
:API spec 7-1,API Q1,ISO/TS29001,ISO9001:2008

Production process:forging + heat treatment +threading + hardfacing 

Heat treated by water quenching and tempering,rough machined as the drawing dimension.

Strict UT inspection according to ASTM A-388 to guarantee high quality.

1.Shafts in ZYZXDY are made from AISI 4140 Alloy steel. 

2. Strict UT inspection according to ASTM A-388 to guarantee high quality.

3. The physical properties are guaranteed one inch below the surface at normal temperature.


4140 chemical component

chemical

C

Si

Mn

Cr

Mo

Cu

P,S

4140

0.38-0.43

0.15-0.35

0.75-1.00

0.80-1.10

0.15-0.25

0.25max

0.02max

mechanical properties: (simples taken from 1/3 radius)

Tensile strength: >=590Mpa

Yield strength:>=390Mpa

Elongation:>=15%

Reduction of area:>=50%

Charpy V impact(Aku):>=31J(at room temperature)

Hardness:176-241 HB

If you are interested in any of our products ,please feel free to contact me.