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4140 Steel Double Helical Gear Drive Shaft
15,000 square meters area with 500 staff members, 20 engineering technicians with senior and medium professional titles and 40 intermediate and senior technicians capable of product designing and developing.
1.Shot peening
2.Bluing
3.Phosphating
4.Nickel-plated
5.Zincing
6.Heat treatment
7.Carburzing
8.Quenching
9.Tempering
10.Oiling
11.Greasing
12.Special color
13.Stain proofing
14.Pre-stretched and anti-fatigue
- QA DOC:Chemical Composition Report, Mechanical Properties Report,UT Report, Heat Treatment Report, Dimensions Check Report
- The data on chemical composition report and mechanical properties report are approved by third party, Luoyang Ship Material Research Institute, CSIC.
- UT test: 100% ultrasonic test according to EN10228-3, SA388, Sep 1921 C/c etc.
- Heat Treatment Report: provide original copy of heat treatment curve/time table.
- Steel Ingot: EAF-LF-VD/ESR. Material Certificate according to En10204-3.1 is requested from ingot supplier.
- QA DOC:Chemical Composition Report, Mechanical Properties Report,UT Report, Heat Treatment Report, Dimensions Check Report
- The data on chemical composition report and mechanical properties report are approved by third party, Luoyang Ship Material Research Institute, CSIC.
- UT test: 100% ultrasonic test according to EN10228-3, SA388, Sep 1921 C/c etc.
- Heat Treatment Report: provide original copy of heat treatment curve/time table.
1>.Pre-sale services: enthusiasm
We provide you with the prophase plan, process flow design and manufacturer equipment according to your special demand.
2>.Sale services: servantSend technicians to the jobsite for guiding the installation and adjustment, training operators and finishing the check and accept together with you.
3>.After-sale services: faithfulnessTo establish long term friendship, we will regularly pay return visit to customers.Supplying technique, building design, instruction, installation and debugging for free.
4>.We provide one-year warranty to make sure your machine runs consistentlyWe always offering lifelong services and provide spare parts for a long term,and repair main parts under right using for free in two years.