国产精品a久久777777,www五月天,亚洲欧美日本另类,免费地址入口2021,久久久久久九九99精品 ,blm2.xyz菠萝蜜,性欧美大战久久久久久久,最新久久精品,日本a人精品,暖暖在线社区视频,一二三四在线观看免费中文吗

65Mn spring steel strip

1．Material:65Mn, 50#, 60Si2Mn, T8-T10A.

2．Specification: Thickness: 0.25mm - 2.5mm  Width: 30mm - 260mm

3．Surface: Heat treatment,black, bright(white),blue and yellow.

4．Hardness: HRC40-49(or according to customer’s requests)

5．Application: rolling shutter spring steel strip, hardware tool, mud trowel, shovel,woodworking band saw blade,automatic clutch patch, horology clockwork spring and shoes material.

6．Packaging: standard export packaging(oiled,inner plastic film, outer side Hessian clothes,then on iron/wooden pallets)