standard specification for hot-formed welded and seamless carbon steel structural tubing 熱成型焊接與無縫碳素鋼結(jié)構(gòu)管標(biāo)準(zhǔn)規(guī)范
aerospace; seamless structural tubes in steel and nickel alloys; technical specification 航空航天.鋼和鎳合金無縫結(jié)構(gòu)管材.技術(shù)規(guī)范
standard specification for hot-formed welded and seamless high-strength low-alloy structural tubing 熱塑焊接和無縫高強度低合金結(jié)構(gòu)鋼管的標(biāo)準(zhǔn)規(guī)范
specification for cold-formed welded and seamless carbon steel structural tubing in rounds and shapes 圓鋼與型鋼的冷變形焊接與無縫碳素鋼結(jié)構(gòu)管規(guī)范
standard specification for cold-formed welded and seamless carbon steel structural tubing in rounds and shapes 圓形與異型冷成型焊接與無縫碳素鋼結(jié)構(gòu)管標(biāo)準(zhǔn)規(guī)范