Big Size Steel Internal Ring Gear

We can supply high quality internal ring gear

1) Drop forgings, Seamless rolled ring, rough machining and fine machining. The diameter of the rings can be 6, 300mm max.
2) Standards: ASTM, ASME, AISI, API, UNI, DIN, SIS and EURONORM
3) Material: Carbon steel, Stainless steel, Alloy steel.
AISI 8620, 4320, 4130, 4140, 4340, 18CrNiMo7, 42CrMo4, A 182 F304/F316/F410, A105.
4) Application: Nomally used for wind power, petrol refine industry, mine industry, wellhead equipment, large bearings, pressure vessel, shipbuliding, etc.
5) Provide heat treatment, rough machining, finish machining.
6) Customers' designs welcomed.

7). Timely delivery &Reasonable price

8). Professional manufacture&Advanced technolog

9). High quality&Good service


We can manufacture various kinds of bevel gears with different sizes by different processes.
We can be produced according to your drawings.
All heat treatment including nitriding, hardening and tempering can be done per your requirements.

Material
Carbon Steel, alloy steel, stainless steel, aluminum alloy, zinc alloy, brass, gray iron, nodular cast iron, ductile iron specified

Standard
ASTM, AISI, BS, DIN, JIS, NF

Process
Investment casting, die casting, gravity casting, sand casting

Machining
Turning, milling, drilling, grinding, threading, CNC machining, etc.

Finishing
Sand blasting, polishing, plating, acid treatment, anodizing, painting and PVC powder coating

Inspection
Coordinate measuring machine, optical comparator, surface indicator, chemical element analysis, hardness testing, tensile testing, impact testing.

Certificate
ISO9001: 2000 / TS16949

Main products
CNC Machining Parts, Investment Castings

Hangzhou Ocean Industry co.,Ltd is a specialized  and OEM supplier of a full range of chains, sprockets, coupling, timing pulley, v belt pulley, shaft, gear, gearbox, gear rack and other transmission spare parts.We are group company. 

We are professional supplier.Our mechanical engineer have more than 20years experience. We pay more attention on quality. Our QC person is professional and our team will control quality for you and support you to explore your market for long term business.

Due to our sincerity in dealing with clients, understanding of their needs and overriding sense of responsibility toward filling ordering requirements, we have obtained the trust of buyer’s worldwide. Having accumulated precious experience in cooperating with foreign customers, our MW brand products are selling well in the American, European, South American and Asian markets. Our MW brand products are manufactured by modern computerized machinery and equipment. Meanwhile, these are manufactured according to high quality standards, and complying with the international advanced standard criteria.

With many year’s experience in this line, we will trust by our advantages in competitive pricing, on-time delivery, prompt responses,on-hand engineering support and good after-sales services. Additionally, all our production procedures are in compliance with ISO9002 standards. We also can design and make non-standard products to meet customers’ special requirement. Quality and credit are the bases that make a corporation alive. We will provide best services and high quality products with all sincerity. If you need any information or samples, please contact us and you will have our soon reply. Looking forward to cooperate with you for long term!