Passivation Seamless Steel Pipe Standards and Industry Regulations

The practical effect of passivated seamless steel tubes is particularly significant in various industrial fields. How much does the extensive capacity of passivated seamless steel tubes cost? Let's dive into a detailed understanding with the editor from the passivated seamless steel tube manufacturer.

The net weight calculation method for passivated seamless steel tubes is based on the net weight per meter of stainless steel tubes calculated by the following formula: Net weight per meter = (Diameter - Wall thickness) * Wall thickness * 0.02466. Here, the diameter refers to the outer surfaces of the seamless tube, and the wall thickness is the thickness of the passivated seamless tube. The calculated value is the net weight per meter of the passivated seamless tube. To determine the total net weight of a full passivated seamless tube, simply multiply this by the actual length of the tube. The values obtained from this calculation method are the net weight calculation method for the tube. The actual net weight of the passivated seamless tube is the net weight obtained from the actual weighing, which is the weight after being weighed. Generally, the actual net weight of passivated seamless tubes is heavier than the calculated net weight. Therefore, when dealing with customer orders, the final credit amount is calculated based on the actual net weight of the passivated seamless tube. According to Chinese national standards, the allowable deviation for the nominal diameter is D1 ±1.5% (±0.75mm), D2 ±1.0% (±0.50mm), D3 ±0.75% (±0.30mm), and D4 ±0.50% (±0.10mm). If there are special requirements for the deviation of passivated seamless tubes, they can be written into the contract, and then delivered according to the terms of the contract.