Comparison of spiral steel pipe specificationsComparison of spiral steel pipe specifications
A. Deviation of spiral steel pipe: In the production process, because the actual size is difficult to meet the nominal size requirement, that is, it is often larger or smaller than the nominal size, so the standard stipulates that there is a difference between the actual size and the nominal size. A positive difference is called a positive deviation, and a negative difference is called a negative deviation.
B. Spiral steel pipe tolerance: The sum of the absolute value of the positive and negative deviations specified in the standard is called tolerance, also called "tolerance zone".
The deviation is directional, that is, it is expressed as "positive" or "negative"; the tolerance is not directional, so it is wrong to call the deviation value "positive tolerance" or "negative tolerance".
|Grade||10#-45#, 16Mn, A53-A369, Q195-Q345, ST35-ST52|
|Standard||(1)GB/T9711, API5L, ISO3183,(PSL1:A/L210、B/L245、X42/L320、X52L360、X60/L415、X65/L450、PSL2:|
Packing & Delivery
Standard Sea-worthy Packing /woven bags packingCompany Profile
Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.
No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.
CSPG has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation.
Q: How long is your lead time?
We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.
A: If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 30 days, depending on the quantity.
Q: Do you provide samples? Is it free or extra?
A: Yes, we can provide samples free of charge and the customer will pay the freight.
Q: What about the moQ?
A: We have a stock of 2000 tons in common sizes, so we can accept one ton.
Q: What are your terms of payment?
A: Payment <= 1000USD, 100% in advance. > = 1000USD, 30% T/T in advance, balance before delivery.