检测标准:è϶(cæ:bbs.3c3t.comËào'×Ç3h
GB/T1228-2006 高强大六角头螺栓è϶(cæ:bbs.3c3t.comËào'×Ç3h
GB/T1229-2006 高强大六角螺母è϶(cæ:bbs.3c3t.comËào'×Ç3h
GB/T1230-2006 高强度垫圈è϶(cæ:bbs.3c3t.comËào'×Ç3h
GB/T1231-2006 高强度大六角头螺栓、大六角螺母垫圈技术条件è϶(cæ:bbs.3c3t.comËào'×Ç3h
检测项目:è϶(cæ:bbs.3c3t.comËào'×Ç3h
1、螺栓楔负荷试验;è϶(cæ:bbs.3c3t.comËào'×Ç3h
2、螺栓连接副扭矩系数;è϶(cæ:bbs.3c3t.comËào'×Ç3h
3、螺母保证荷载试验;è϶(cæ:bbs.3c3t.comËào'×Ç3h
4、螺母、垫圈表面硬度。è϶(cæ:bbs.3c3t.comËào'×Ç3h