发布时间:2025-01-19 19:33:25
平面法兰PN2.5、6(外径375--内径273)PN10(外径395--内径273)PN16(外径405--内径273)
突面法兰PN2.5、6(外径317--内径273)PN10、16(外径330--内径273)PN25(外径340--内径273)
PN40(外径352--内径273)PN63(外径364--内径273)
凹凸面法兰PN10--63(外径312--内径273)
今天看房承重柱和横梁有裂纹请各位帮着鉴定一下是什么问题严不严重
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