We are pleased to introduce a efficient and energy saving rapid cooling heat-transfer tube-D shape (semicircle) seamless steel tube to the refrigeration industry.
现向制冷行业推荐使用一种高效节能的速冻传热管——D型(半圆形)无缝钢管。
The provision of the seamless steel tube mark is disaccord in the national standard and the petrochemical industry standard, this paper discusses the controversial question in the construction.
本文对无缝钢管标识规定因国标与石化行业标准要求不一致，造成工程建设中的争议情况进行探讨。
The provision of the seamless steel tube mark is disaccord in the national standard and the petrochemical industry standard, this paper discusses the controversial question in the construction.
本文对无缝钢管标识规定因国标与石化行业标准要求不一致，造成工程建设中的争议情况进行探讨。
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