规格重量代码lb/ft壁厚材质标准inchmminchmm4 1/2”114.39.5-15.100.205-0.3375.21-8.56 API J55,K55,X42-80,L80,N80,PSL1,PSL2 API5L,API5CT ASTM JIS, DIN, GB5”127.011.50-24.100.22-0.505.59-12.75 1/2”139.714.0-43.10.244-0.8756.20-22.236 5/8”168.2820.0-32.00.288-0.4757.32-12.067”177.817.0-57.10.231-0.8755.87-22.237 5/8”193.6824.0-55.30.30-0.757.62-19.057 3/4”219.0846.100.59515.118 5/8”219.0824.0-49.00.264-0.5576.71-14.159 5/8”244.4832.3-75.60.312-0.7977.92-20.2410 3/4”273.0532.75-85.300.279-0.7977.09-20.2411 3/4”298.4542.0-71.00.333-0.5828.46-14.7813 3/8”339.7348.0-72.00.33-0.5148.38-13.0616”406.4065.0-109.00.375-0.6569.53-16.6618 5/8”473.0887.500.43511.0520”508.094.0-133.00.438-0.63511.13-16.13