NIS 70:1975-尼日利亚水污水和燃气铸铁压力管规范
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NIS 70:1975 Pages: Price G ICS 23.040.01
Specification for cast iron pressure pipes for water sewage and gas.
NIS 70:1975-SONCAP认证-尼日利亚水污水和燃气铸铁压力管规范
Specification for cast iron pressure pipes for water sewage and gas.
NIS 70:1975-SONCAP认证-尼日利亚水污水和燃气铸铁压力管规范
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