The chemical composition of the steel pipe test_Steel Pipe knowledge_News

(1) GB3087-82 "low and medium pressure boiler seamless steel pipe provided. The chemical composition of test methods according to GB222-84 and GB223 "steel and alloy chemical analysis of the relevant part of the method".
(2) GB5310-95 "high-pressure boiler seamless steel tubes provided. The relevant part of the chemical composition of test methods according to GB222-84 steel and alloy chemical analysis method, GB223, steel and alloy chemical analysis method ".
(3) imports of the chemical composition of the boiler tube inspection by the relevant standards of the contract
At present, the world production of steel pipes a total of over 1850 companies in over 110 countries, more than 5100 manufacturing plant, which produce oil pipe more than 260 plants in the over 170 companies in 44 countries. 2000, the seamless steel tubes of apparent consumption of 4.18 million tons, of which the domestic supply of 3.821 million tons, accounting for 91.4% of the total domestic demand. Imported 35.9 million tons, accounting for 8.59% of the total domestic demand. The same year the oil pipe consumption of approximately 910,000 tons. Import about 252,000 tons. Pipe imports accounted for about 70% of the total domestic consumption, which imports accounted for 27.69% of the total domestic consumption of oil pipe imports accounting for about 70% of the seamless steel pipe imports. More than half of the total imports of oil pipe imported from Japan. China's largest production base of the casing - steel pipe products of Tianjin Steel Tube Company in 2000 out of 522,000 tons, of which oil casing production was 364,100 tons. Casing accounted for more than half of the national oil production. China casing market on the production and sales.
From both international and domestic market point of view, the existing production capacity of seamless steel pipe (OCTG) were greater than demand. Therefore, the future focus should be placed on the ability to give full play to existing units, the development of high-strength grade, high to fight to destroy, high resistance to corrosion of oil pipes, high-pressure boiler tubes and the cylinder tube and other products. Countries for China's steel market to optimize the product structure. This is also the increase in the domestic and international competitiveness of their products, the key to expanding market share. That is, to improve the market competitiveness of the domestic steel pipe enterprises are the long-term task and the key to successful development of the domestic enterprises after plus and WTO.

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