1. Carbon & Alloy Steel:
1) molding process:
Resin sand casting
/Precision/Investment/Loss wax
/Fast Forming/RP investment casting/Forging
2) Material:
----EN 10293 GE200/DIN1681 GS38
----EN 10293 GE240/DIN1681 GS45
----EN 10293 GE300/DIN1681
GS5216Mn, 25Mn, 34CrMo, 42CrMo4
3) Industry involved:
Twist lock for container locking,
Specified container corner casting,
Non-standard forging draw bar weighted 31kgs,
Dia. 300 Bolted joints of space grid structure.
4) Part unit weight range:
Resin sand casting from 50kgs up to
Chinese loss wax from 0.01 up to 100kgs,
Japanese loss wax from 0.001up to 80kgs.
Close die Forging up to 30kgs
5) Max/Min wall thickness requirements:
6) Manufacturer Certification: ISO9001(2000)/ TS16949
2. Stainless steel:
1) molding process:
Precision/Investment/Loss wax/ Centrifugal
Casting
2) Material:
CF8, CF8M, CF3, CF3M
3) Industry involved:
Impellers for aero industry
Centrifugal tubes with OD670/L=4.5m/W=1.5tons
4) Part unit weight range:
Japanese loss wax from 0.001up to 80kgs.
Centrifugal tubes up to 1500kgs
5) Max/Min wall thickness requirements:
6) Manufacturer Certification: ISO9001(2000)/ TS16949
Tolerance standard:
VDG P690 T1 VDG P690 D1
ISO2768mK
Dimension
Tolerance
<6
± 0.25
6to10
± 0.3
10to18
± 0.35
18to30
± 0.4
30to50
± 0.5
50to80
± 0.75
80to120
± 0.85
120to180
± 1.0
180to250
± 1.2
250to315
± 1.6
315to400
± 1.8
400to500
± 2.0
500to630
± 2.7
630to800
± 3.1
800to1000
± 3.6
Dimension
Tolerance
<6
± 0.15
6to10
± 0.18
10to18
± 0.22
18to30
± 0.26
30to50
± 0.4
50to80
± 0.45
80to120
± 0.55
120to180
± 0.8
180to250
± 1.2
250to315
± 1.3
315to400
± 1.8
400to500
± 2.0
500to630
± 2.7
630to800
± 3.1
800to1000
± 3.6
Ningbo Nathan Machinery Co., Ltd. (Renyi Casting) is a professional OEM manufacturer, established in 2005, specializing in the supply of die casting, lost wax casting, sand casting, precision machining and metal products. We supply raw casting to final finish product. We use tried and tested casting suppliers, but perform all secondary machining and QC operations in-house.
Thanks to our experienced engineering team, skilled production operatives and strong relationship with key local sub-contractors, our company supplies a unique blend of manufacturing services to provide complete
Products to customers all over the world.
We are accredited to ISO 9001: 2008 quality management system through NQA, a UKAS recognized auditor. Our shop floor operate 5S methodology.
Our key advantage over other is our attitude toward quality. We know what's right, and not what just good enough. This is reflected in our quick response, technical analyze of drawings, proactive approach in passing on our production experience to help clients reduce cost and improve designs.
All in all, we aim to supply competitively priced quality products, with the aim of creating a long lasting cooperation for mutual benefit.
