Seamless stainless steel pipes have revolutionized the plumbing industry. This pipe has a very low tendency to corrode. It is also resistant to corrosion and attack by bacteria. It’s heat resistant for both high and low temperature use.
We recommend you use a cold drawing amperage of at least five hundred amperes. Cold drawing amps are the standard measurement for finding resistance to heat, but never lower than four hundred amperes because it will produce a false resistance which is almost unnoticeable in a final inspection. The amount of amperes to use in your cold drawing test is dependent on the pipe size, pipe dimension, and pipe configuration. Please refer to the NPDES No. 7 stamped from the packaging to get the best product performance.
In the cold draw test, there is no significant variation between alloys. So, we always recommend that you use an even number of identical sized seamless stainless steel pipe alloys. The reason for this is that alloys will have different wall thickness. Each wall thickness will produce different resistance to flow.
For each grade of seamless stainless steel tubing, we recommend three to four identical sizes. The grade of stainless steel will have a major influence on the ultimate performance of this grade. The alloys with the highest grades of chromium, vanadium, ferric iron, and nickel alloys will have the most superior corrosion resistance. The alloys with the lowest grades of chromium, vanadium, and iron alloys will have inferior resistance to flow.
In the field of construction, there are five main constructions grades and four main manufacturing specifications. These constructions are: Common Specification, High Temperature, Plated, Plastic Adhesive Stamped, and Plated Conveyor Fit. All seamless stainless steel pipe in this product category will be standardized within these four construction grades. This would include: Common Specification Stainless Steel Pipe, High Temperature Stainless Steel Pipe, Plated Conveyor Fit, and Plastic Adhesive Stamped.
All seamless stainless steel pipes will be made with the same quality grade of iron and chromium. The difference in seamless stainless steel pipe is the wall thickness. Thicker wall thickness allows more surface area to be excavated for the expanding of the pipe. When you are purchasing seamless pipes, you must inspect the wall thickness.
The alloys that contain vanadium or ferric alloys in them are much more resistant than pure chromium. Therefore high temperature forming oils or gas may be used for forming the pipes. The resistance of the seamless stainless steel pipe does not affect its use at high temperatures. Only in low temperatures the use of the seamless pipe sizes stops. This is because the vanadium and ferric alloys prevent the flow of the gas and thus prevent the occurrence of corrosion of the pipe.
If you want to have the best quality seamless stainless steel pipe, the best material to use is carbon steel. It contains a very little amount of chromium. Hence, it is suitable for high temperature forming oils or hot gases. There are many other grades of high-carbon stainless steel pipe available in the market. Some of them include: Type HP, Type HR, Type GR, and Type XVI. Therefore, before purchasing any of the high-carbon stainless steel pipe, ensure that you have selected the appropriate one.
There are three different grades of API 5l specification. These are: Short-term usage, Medium-term usage, and Long-term usage. High-performance products do not necessarily require daily oil changes, therefore the grades API 5l should be appropriate. The pipe lengths obtained by selecting the appropriate grades depend upon the pipe capacity, diameter and length, as well as, the manufacturing process employed.
Seamless stainless steel pipes are fabricated into tubular goods. It is very difficult to manufacture the seamless products. Many complicated steps need to be followed in manufacturing the tubular goods. The number of the threads, the cross sectional area of the pipes, the surface texture, the number of the threads per length of the pipe, the material of the threads, the heat treatment applied, etc., are some of the factors responsible for the manufacturing of the tubular goods.
Stainless steel pipe with a high chromium concentration is preferred. Chromium contributes to corrosion resistance, hence it enhances the lifespan of the stainless steel pipe. The strength and the durability of the pipe depends upon the chromium concentration. The higher the chromium concentration, the more resistance to stress corrosion cracking and bending. Some of the other components that influence the strength of the pipe are the alloying materials and the manufacturing process.