By definition, seamless tubes are completely homogenous tubes, the properties of which give seamless tubing more strength, superior corrosion resistance, and the ability to withstand higher pressure than welded tubes. This makes them more suitable in critical applications in harsh environments, but it comes with a price.
Product Parameters
Stainless Steel Seamless Pipe Manufacturing
Knowing that distinction can also help in determining which tubing is best for a given application, welded or seamless. The method of manufacturing welded and seamless tubing is evident in their names alone. Seamless tubes are as defined – they do not have a welded seam. The tubing is manufactured through an extrusion process where the tube is drawn from a solid stainless steel billet and extruded into a hollow form. The billets are first heated and then formed into oblong circular molds that are hollowed in a piercing mill. While hot, the molds are drawn through a mandrel rod and elongated. The mandrel milling process increases the mold’s length by twenty times to form a seamless tube shape. Tubing is further shaped through pilfering, a cold rolling process, or cold drawing.
Stainless Steel Seamless Pipe Benefits
● Stronger
● Superior corrosion resistance
● Higher pressure resistance
Stainless Steel Seamless Pipe Applications
● Oil and gas control lines
● Chemical injection lines
● Below sea safety valves
● Chemical processing plant steam and heat trace bundles
● Fluid and gas transfer
Chemical Industry
steel is used to construct facilities such as large storage tanks, refining equipment, and chemical pipelines.
Natural Gas Industry
Steel is also widely used in the energy industry, such as oil and gas pipelines.
Oil Pipeline
In the oil and gas industry, carbon steel is used to manufacture various equipment and pipelines.
Ship
In shipbuilding, steel is used to manufacture key components such as ship structures and engine parts.
Stadium
Steel plays an important role in steel structure buildings such as high-rise buildings, large-span buildings, and sports venues.
Water Treatment
The application of steel in water treatment is mainly reflected in the construction of water treatment equipment and the production of components such as pipelines.
Q1: What metal materials do you supply?
Jiangsu Zhongersheng is a professional manufacturer mainly supplying carbon steel, hot-dip galvanized steel, PPGI color coated steel, 201/304/316 stainless steel sheets, coils, tubes and profiles, as well as various steel structural parts. Our products serve infrastructure, photovoltaic, machinery manufacturing, chemical and new energy industries.
Q2: Can you customize material grades, thickness and sizes?
Full customization is available. For carbon steel, galvanized steel and stainless steel, thickness, width and length can be adjusted in accordance with ASTM & EN standards. Profiles can be cut and processed as per drawings, and special steel materials can be customized via production line scheduling.
Q3: What’s the difference between galvanized steel and color coated PPGI?
Hot-dip galvanized steel features pure zinc anti-rust coating with cost-effective and wear-resistant performance, suitable for steel brackets, guardrails and load-bearing structures, and supports secondary painting. PPGI takes galvanized sheet as base material with colorful coating for anti-rust & decorative purposes, widely used for factory roof/wall panels and energy storage housings. Thick galvanized steel is recommended for rainy coastal areas, while PPGI is ideal for decorative outdoor projects.
Q4: Do you have spot inventory? What’s your MOQ?
We built a 10,000-ton standardized warehouse with abundant spot stock of carbon steel, galvanized steel and stainless steel. MOQ is 1 ton for standard sizes; small samples of dozens of kilograms are acceptable. No upper limit for bulk engineering orders, mixed container loading of multiple steel types is supported.
Q5: How long is the delivery time for spot goods & customized goods?
Spot goods can be loaded within 3-7 days; simple cutting & bending processing orders take 7-10 days; mould opening & special steel customization takes 15-30 days, subject to specific specifications confirmation.
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