av无码网址福利_超碰aⅴ亚洲中文字幕_亚洲三级片区无码_亚洲欧洲无码精品Ⅴa

Main Products
steel for machine structure Products>> Main Products>> steel for machine structure
Products Grade: 20Cr2MnMoA
Specifications: φ20~28mm
Applied Standard:  agreement
Characteristics: this product is used to produce continuous sucker rods.
Applications: Sucker rod
Use of Products: This grade has the feature of stable chemical composition, low harmful elements(O、N) and nonmetallic inclusions, minor decarburization, good surface quality,good plasticity and notched bar impact strength after heat treating.Now our product is used in Shengli Oil Field.