GB/T12718-2009礦用高強度圓環(huán)鏈焊接處不應(yīng)有影響質(zhì)量的夾渣、燒傷、目視裂紋、凹陷等缺陷，焊接處應(yīng)去毛刺，焊接區(qū)應(yīng)以連環(huán)直邊中心為界等距分布。所有礦用高強度圓環(huán)鏈在熱處理后均應(yīng)進行預(yù)拉伸處理，預(yù)拉伸負荷為該規(guī)格礦用高強度圓環(huán)鏈試驗負荷的90%以上，預(yù)拉伸處理后的鏈條應(yīng)進行外觀檢查，對任何有目視裂紋及其他缺陷的鏈環(huán)應(yīng)去掉并補入新環(huán)，補入的新環(huán)仍應(yīng)進行常規(guī)熱處理和預(yù)拉伸。

標記示例：

GB/T12718-2009礦用高強度圓環(huán)鏈(代替GB/T12718-2001)的主要規(guī)格有礦用高強度圓環(huán)鏈GB/T12718-10x40-B 、礦用高強度圓環(huán)鏈GB/T12718-14X50-B、礦用高強度圓環(huán)鏈GB/T12718-18X64-B、礦用高強度圓環(huán)鏈GB/T12718-22X86-B、礦用高強度圓環(huán)鏈GB/T12718-24X86-B、礦用高強度圓環(huán)鏈GB/T12718-26X92-B、礦用高強度圓環(huán)鏈GB/T12718-30x108-B、礦用高強度圓環(huán)鏈GB/T12718-34X126-B、礦用高強度圓環(huán)鏈GB/T12718-38X137-B、礦用高強度圓環(huán)鏈GB/T12718-42X152-B。

礦用高強度圓環(huán)鏈GB/T12718-10x40-C、礦用高強度圓環(huán)鏈GB/T12718-14X50-C、礦用高強度圓環(huán)鏈GB/T12718-18X64-C、礦用高強度圓環(huán)鏈GB/T12718-22X86-C、礦用高強度圓環(huán)鏈GB/T12718-24X86-C、礦用高強度圓環(huán)鏈GB/T12718-26X92-C、礦用高強度圓環(huán)鏈GB/T12718-30x108-C、礦用高強度圓環(huán)鏈GB/T12718-34X126-C、礦用高強度圓環(huán)鏈GB/T12718-38X137-C、礦用高強度圓環(huán)鏈GB/T12718-42X152-C。

礦用高強度圓環(huán)鏈GB/T12718-10x40-D、礦用高強度圓環(huán)鏈GB/T12718-14X50-D、礦用高強度圓環(huán)鏈GB/T12718-18X64-D、礦用高強度圓環(huán)鏈GB/T12718-22X86-D、礦用高強度圓環(huán)鏈GB/T12718-24X86-D、礦用高強度圓環(huán)鏈GB/T12718-26X92-D、礦用高強度圓環(huán)鏈GB/T12718-30x108-D、礦用高強度圓環(huán)鏈GB/T12718-34X126-D、礦用高強度圓環(huán)鏈GB/T12718-38X137-D、礦用高強度圓環(huán)鏈GB/T12718-42X152-D。