400 Series Square Ss Tube

The difference in the basic manufacturing method is obvious from the names. Seamless tube is extruded and drawn from a billet while welded tube is produced from a strip that is roll formed and welded to produce a tube. Welded tube is considerably less expensive than seamless tube and is readily available in long continuous lengths.

Although the working pressure of welded tube is 20% less than that for a similar seamless tube, working pressure is not the determining factor for choosing seamless tube over welded tube for analyzer sample lines. The difference in potential impurities, which reduce the corrosion resistance of the finished tube, is why seamless tube is specified.

The weld area is considered to be inhomogeneous thus exhibiting different malleability and less corrosion resistance as well as greater dimensional variation. Drawing welded tube reduces these anomalies. Most tubing (seamless and welded) is drawn to produce final dimensional tolerances. Drawing is an operation, which “pulls” a tube through a die.

There are different methods for drawing a tube however they can be thought of as sunk drawn and a plug drawn. The difference is seen in the ID surface roughness. A sunk drawn tube is done without internal support. Sink drawn tube reduces the diameter without controlling the wall thickness. There is some “crunching” of the ID and the tube develops a “sun burst” cross section and wrinkles circumferentially along the inside surface. This can be especially noticeable around the weld on welded tubing. Plug or rod drawn tube is pulled through a die with internal support and produces a much smoother inner surface.

What Is 400 Series Stainless Steel?

400 series consists of steels with a higher composition of chromium and manganese than that of 300 series steels. Unlike the 300 series, 400 series steels can be hardened using hot-working methods. Exposure to heat makes 400 series steels more workable without damaging them. 400 series steels actually become harder when exposed to heat.

Even though they have a high chromium content, 400 series steels are more susceptible to rust and corrosion than their 300 series counterparts. Moisture, for instance, can cause oxidation of the iron compounds within 400 series steels. Nonetheless, 400 series steels offer excellent strength and protection against physical wear and tear.

APPLICATIONS FOR 400 SERIES Stainless Steel

The corrosion-resistance, stain-resistance, low maintenance, and cost-effectiveness make it a versatile material that can be used across industries. Some examples of industry applications include:

· Agricultural equipment

· Automotive exhaust system components, silencers and heat exchangers

· Axles, fasteners and shafts

· Food industry equipment

· Hardware

· Motor shafts

· Surgical cutting tools

· Miscellaneous wear-resistant applications such as bearings, knives, and razor blades

400 Series Ss Tube is a kind of high quality Anti Corrosion Tube. As a factory, we can product and provide 400 Series Welded/Seamless 

Ss Square Tube and other Stainless Steel Tube In Various Shape with high quality.

Product description

Q1. How long can make delivery?

A: For stock products,will make shipments in 2-5 days after receiving deposit or receiving T/T;

for products need new production for common materials,usually make shipments in 7-10 days;for products need new products for special and rare materials,usually need 15-20 days to make shipment.

Q2. Can you provide the samples?

A:Samples can be provided with samples' charge and courier fee by the buyer's side.

Q3. What's your payment terms?

A: Down payments 30%TT and balance 70% TT or L/C.

Q4. How do you ship the goods and how long does it take to arrive? 

A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive.

Airline and sea shipping also optional.

For mass products, ship freight is prefered.

Q5. Can you accept customize?

A: Yes. It can be customized as per the customers' request.

Q6. How to ensure the quality?

A:Mill Test Certificate is supplied with shipment.

If needed, a Third Party Inspection is acceptable or SGS.