OEM ASTM DIN EN 4340 Alloy Steel Forgings / Marine Forged Gear Shaft 100T

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OEM ASTM DIN EN 4340 Alloy Steel Forgings / Marine Forged Gear Shaft 100T


Forged shaft, gear shaft,ASTM DIN EN standard marine shafting forged gear shaft gear increaser pinion shaft


Quick Detail:


1.   Variable speed gear shaft, carburizing steel gear shaft, forged pinion shaft, forged gear shaft

2.   OEM manufacture

3.   Raw material in stock





1. The gear reducer pinion shaft can be made of alloy steel, carbon steel or other kind of material as per the customer’s requirements.

2. It conforms to the standard of ASTM, EN, DIN, GB.

3. The manufacturing equipment is 30~185MN hydraulic press, the forging ratio >3.

4. Professional QC team inspects each product before delivering.






Gear reducer pinion shaft


4340, 18CrNiMo7-6, 4140, 20CrMnMo

Material standard

EN 10228, ASTM, DIN


Max. OD: 8000mm, Max. Thickness: 3000mm


Max.: 100T

Smelting process


Forging & machining process

Ingot→Heat→Forging→Heat treatment  (Normalizing+tempering)→Inspection→Rough machining→UT→2nd Heat treatment →Finished machining →Inspection

UT Standard

EN 10228, ASTM, DIN





The gear reducer pinion shaft in the one of parts to support the rotating parts and rotary together to delivery the torque. It’s widely used for marine &boat industry, Mining machinery industry etc.



Competitive Advantage:


Quality control and management to the whole produce process, including ingot smelting, forging, heat treatment, machining and strictly final inspection prior to delivery.

Excellent product quality and service, competitive price, “in-time” delivery.



Why us


Good mechanical properties, reliable quality, nice service and short lead time.


We has long term business in the gear shaft forgings industry. Customers are satisfied with our products and service. 




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Ms. Jennifer Xu
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Zhangjiagang Zhongzhong Import And Export Co., Ltd
Huijing garden26-M301, Wuxi, Jiangsu, China (Mainland)
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