汤唯色未删减版百度云资源|91视频在线免费观看|国产高清综合|国产精品呻吟av,霹雳娇娃2电影在线观看完整版免费,尺度大的未删减版的电影中国,我爱你韩国电影完整版在线观看

Main Products
Products Grade: SCM415、SCM435,SCM435-M,SCM440,GSCM435-A,G-SCM435-B,GSCM440-A
Specifications: φ5.5～42mm
Applied Standard:  Q/XG 114
Characteristics: The wire rod is used to produce cylinder nut and bolt ,rail bolt, tud bolt of class 12.9..
Applications: High strength fastenerCommon partsFastener steel
Use of Products: SCM435 is a commen steel grade which used to produce high strength bolt of class 12.9.This product has characteristics of uniform-chemical composition, low percentage of harmful elements, high purity, slight decarburisation, good surface quality. After spheroidize annealing, this product has the characteristics of good cold heading properties ,stable heat-treatment properties and good hardenability. SCM440 is similar to SCM435,but higher strength and hardenability.