Measured by PPI, producer prices for crude oil, raw coal, ordinary medium rolled steel, and wire steel rose by 37.5%, 19.4%, 29.6%, 25.6% respectively over the same period of last year.
To analyze every quality defeCts Of oil-tempered spring steelwire made in China, put forward appropriate improvement measures.
分析了国产油淬火-回火弹簧钢丝的各种质量缺陷,并提出了相应的改善措施。
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Our main products are steelwire weaving and wire spiral rubber hose, oil drilling pipe, oil and liquefied petroleum gas and special gas hose, sandblast pipe.