亚洲男人天堂2022|一道本不卡视频|欧美亚洲精品日韩|高清电影免费完整版在线观看,不卡影院在线观看,汤唯电影色戒全集未删减版在线观看,电影在线观看完整版2023

Main Products
steel for machine structure Products>> Main Products>> steel for machine structure
Products Grade: 20CrMo
Specifications: φ5.5~38mm
Applied Standard:  GB/T 3077
Characteristics: As usual,this product is used to produce the automobile and motorcycle accessories,mechanical gear.
Applications: Common partsCommon fastenerconstruction fastener steel
Use of Products: This product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, good surface quality. After spheroidize annealing, this product has the characteristics of good cold heading properties. And the product has excellent hardenability.