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material:SCSiMn2H, 1. high quality, 2. reasonable price, 3. excellent after-service, 4. brand spare parts - details see: https://www.machineto.com/excavator-track-roller-for-komatsu-pc300-7-undercarriage-parts-10090516

kinds	Cast steel
material	SCSiMn2H
Chemical composition	C: 0.4-0.44 % Si: 0.35-0.5 % Mn: 0.9-1.1 % S:<0.025 P:<0.025
Mechanical properties	Tensile strength:>680mpa Yield strength:>553mpa elongation:>19%
Matrix hardness	>187HB

Why us?

1.competitive price

2.International quality standard-highly durable and long lasting products

3.Timely delivery of consignment

4. Our service team will quote the best price promptly, and our production department will ensure the lead time of your goods while our QC department will take full charge of the quality for you.

We specialized in manufacturing for excavator corresponding parts.

We use good material to ensure quality and consistency.Our heat treatment process provides hardness in high wear areas,and elastic core to resist shock and impact loads.

Strict quality management to produce effective and stable products,and meet customer's demand.

We specialized in manufacturing for cast iron products and cast steel products ,our customers are Komastu ,Ouyatuo ,Shantui ,Shanzhong, Lonking ,ITM and other large companys,so we can promise the international quality standard-highly durable and long lasting productsand timely delivery of consignment.