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简介:      1、桥梁防撞护栏标的:(1)用于深井、超深井的超高强度套管;用于严寒地区的低温高韧性油套管;高抗挤套管;抗侵蚀的油套管;同时兼顾抗压、耐温、耐侵蚀特点的非API及其他特种油套管供给商。
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