Steel Seamless Pipe

Steel seamless pipes are widely used in the industrial, construction and energy industries because of their numerous advantages. Here are some of the advantages listed:

1. High strength: Steel seamless pipe has high strength and compressive resistance, making it an ideal choice for transportation and use in harsh conditions.

2. Good corrosion resistance: steel seamless pipes have less risk of wear and corrosion in use. The chemical composition of steel and other protective measures can increase the corrosion resistance of steel pipes and extend their life.

3. Convenient construction: Steel seamless pipe is easy to process and install, because its shape and size can be cut and trimmed according to actual needs, which means that the construction process can be completed faster, thus reducing the time cost.

4. Suitable for high temperature and high pressure: steel seamless pipe is not limited by high temperature and high pressure environment. This makes them widely used in industries such as chemical, power, and nuclear power, where high temperature and pressure fluids need to be handled.

5. Easy to clean and maintain: Compared with other materials, there are no gaps and bumps in steel seamless pipes, which makes them easy to clean and maintain. These pipes can also be cleaned, burned or filled with liquids by various methods.

In short, steel seamless pipes have their advantages in many aspects. They are robust, corrosion-resistant, suitable for high temperature and pressure environments, and easy to install and maintain. These advantages make it an ideal choice in many industries.

VALUE-ADDED SERVICES

BEVELING

Stainless Steel tubes contain one end angled, so that it mates with a complementary tube end. Tubes can be beveled for certain applications in order to make welding of stainless steel tubes easier, which saves weld prep time and money compared to hand cutting.

HEAT TREATING & ANNEALING

Stainless Products can heat treat some 400 series stainless steel seamless tube. Heat treating realizes stress as a result of hardening, depending upon the chemistry of the metal being treated. Heat treating is also used for tempering, quenching, normalizing, and solution annealing.

HONING & TURNING

During the honing/turning process, an abrasive rotating tool removes metal from the interior surface of a cylinder, pipe, or tube. The main purpose of honing is to finish the surface to a particular diameter and/or desired cylindrical geometric design. Honing is typically a secondary machining operation that completes a produce/part, relieves stress created during production, or corrects features of the finished product. A typical production cycle is to drill, ream, heat treat, then hone.

POLISHING

POSITIVE MATERIAL IDENTIFICATION (PMI)

In some cases, it may be necessary to complete additional positive material identification testing. Stainless Products can complete this testing in house or we can work with an independent laboratory to complete the testing. Please contact us for specific requirements.

TOLERANCES

Hot-Finished Round Tubing Permissible Variations:

These tolerances apply to cut lengths up to an including 24 Ft. (7.3M). For lengths over 24Ft. an additional over tolerance of 1/8in (3.1mm) for each 10ft. (3m) or fraction thereof shall be permissible up to a maximum tolerance of 1/2 in. (12.7mm)

Cold-Finished Round Tubing Permissible Variations:

Tolerances of tubes produced by the rod or bar mandrel process and which have an inside diameter under 1/2 in (12.7mm) (or an inside diameter under 5/8 in. When the wall thickness is more then 20% of the outside diameter.) Are as shown in this table except that wall thickness tolerances are 10% over and under the specified wall thickness.

For Ovality values, the tolerance for average outside diameter at any one cross section does not exceed the outside diameter tolerance value for the applicable outside diameter.

Many tubes with wall thicknesses more then 25% of outside diameter or with wall thicknesses over 1 1/4 in. Or weighing more then 90lb/ft. are difficult to draw over a mandrel. Therefore the wall thickness can vary 12 1/2% over and under that specified.

For those tubes with inside diameter under 1/2 in (or under 5/8 in when the wall thickness is more then 20% of the outside diameter) which are not commonly drawn over a mandrel, A is not applicable. Therefore the wall thickness can vary 15% over and under that specified, and the inside diameter is governed by both the outside diameter and wall thickness tolerances.

These tolerances apply to cut lengths up to an including 24 ft. For lengths over 24ft, an additional over tolerance of 1/8 in. for each 10ft. or fraction thereof shall be permissible, up to a maximum tolerance of 1/2 in.

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