Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, reasonable price and stock. How to increase the stability of large-scale steel spiral pipe, rails, shame steel, large diameter steel pipe, forgings, etc., may open dumps. In a warehouse not with acid, alkali, salt, cement, steel and other aggressive materials stacked together. Different varieties of steel should be stacked separately, to prevent confusion, avoid contact corrosion. Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, reasonable price and stock. Spiral pipe deviations and tolerances A, spiral pipe deviation: In the production process, because the actual size is difficult to achieve nominal size requirements, Shanxi spiral, which is often greater than or less than the nominal size, so the standard set forth between actual size and nominal size allows There is a difference. The difference is positive is called positive deviation, negative difference is called negative bias. B, spiral steel pipe Tolerance: positive and negative values ??specified in the standard deviation of the absolute value of the sum is called tolerance, also called 'tolerance zones'. Deviation is directional, that is 'positive' or 'negative' means; the tolerance is not directional, coiled tubing, therefore, the deviation value is called 'positive tolerance' or 'negative tolerance' is called is wrong . Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, reasonable price and stock. Pile with spiral welded steel pipe (SY5040-2000) is a hot-rolled steel strip coils for the tube, often warm spiral shape, spiral price, using double-sided submerged arc welding or high frequency welding made of spiral pipe plant in Tianjin, used in civil engineering structures, piers, bridges and other infrastructure pile with steel pipe despite the impact of the economic crisis, but the spiral steel pipe company cited the development of lead being restored, to meet a better tomorrow. Spiral Pipe played a significant role in the transport of gas, transportation. Shanxi spiral, around the steel joint, q345b spiral from the Tianjin Steel Trade Co., Ltd. Mastery. Shanxi spiral, around the steel joint, q345b spiral of Tianjin Steel Trade Co., Ltd. Mastery (www.tjtdgl.com) (www.tdglgt.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Yanjing Li.