Seamless Stainless Coil Tube

Seamless Stainless Coil Tube

The seamless stainless steel coil tubes are used for a variety of circulation systems for different gases and fluids, coil tubes provide the ability for long length tube installations without the need for joining fittings. Baosheng offeres both welded and seamless coil tubes and can provide them in long mill lengths or cut-to-length in sections as short as fifty feet. These products have industry applicability for petrochemical, oil production heat tracing, geothermal and flow measurement applications.

Oil & Gas – Chemical injection and hydraulic control lines in downhole and subsea applications. Our tubing has helped some of the most well-known oilfield service companies reduce operating costs and improve efficiencies.

Chemical Processing – When critical fluids are transferred in a chemical process environment our seamless tube eliminates the potential of a filler material to flake off and get trapped, resulting in inaccurate measurements or an overall system breakdown.

Alternative Energy – Coiled tubing for Hydrogen Refueling Stations, CNG Transfer, LNG Transfer, Geothermal and Solar Dishes.

Aerospace & Defense – We provide high grade MIL-Spec seamless stainless steel tube for applications such as Airframes, Fuel Lines, Gas Return Tubes for Automatic Weapons and Hydraulic Lines.

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seamless stainless coil tubing is available in numerous high-performing, corrosion-resistant stainless steel and nickel alloys including many 300 Series alloys, Alloy 825, Alloy 600, Alloy 625,etc All tubing can be coated with PVC or TPU providing additional protection against the elements and line identification.

We specialize in manufacturing small diameter tubing ranging from 3.00 to 12.70mm and a variety of wall thicknesses.Grand’s coiled seamless tubing can exceed 3,000 feet (1000M) in length without any longitudinal or orbital welds.

We can supply coiled seamless tubing in loose bulk wound coils, or level wound on various size reels. New alloys are constantly being tested and evaluated for specific applications. Our engineering staff welcomes the opportunity to work with customers to solve special problems.

With seamless coil tubing, there is no risk of impurities that are often associated with welded tubes.  This makes seamless the preferred option for a multitude of critical applications.

Our uniquely designed, high quality continuous length seamless stainless steel and high-nickel tubing helps to reduce installation time and is more reliable than coupling multiple shorter lengths with welds or mechanical fittings. Continuous length, seamless tubing significantly decreases the opportunity for defect, such as leaks and other long-term failures.

Manufacturing Process of Stainless Steel Tubes

Seamless stainless steel pipe is made from solid stainless steel bar which is called billet. By using different processing techniques such as extruding, gun drilling or piercing, the steel bars are produced to be steel tubes.

  1. Firstly, the billets would be inspected exactly.
  2. Then put the billets into the heat to raise the temperature.
  3. The hot billets would then be pierced through the center with a mandrel. Through this procedure, the bar shape billet becomes hollow shape billet.
  4. The next step is rolling and stretching the hollow billet. The billet is precisely rolled and stretched until it meets all the specifications with length, diameter and wall thickness according to requirements.


Uses and Applications of Seamless stainless steel pipe

Heat exchanger

A heat exchanger is a piece of equipment designed from one medium to another for efficient heat transfer. The application areas of the Stainless Steel Seamless pipes: Heat Exchanger Tube specifically cover the following: Apparatuses and heat exchangers for piping systems.

Fertilizer industry

The areas of application in the fertiliser industry primarily include the following: Melamine plants high-pressure tubes and piping systems apparatus and heat exchangers of urea synthesis ethylene plants.

Chemical and petrochemical industry

The fields of operation in the chemical and petrochemical industries primarily include the following: Melamine plants high-pressure tubes and piping systems apparatus and heat exchangers of urea synthesis ethylene plants.

Power generation and Environmental technologies

Our tubes and pipes are used mainly for heat exchangers in power plants and the energy sector. Environmental systems and waste incineration plants also have the same field of application: reheater superheaters.

Develop ship-building for international clients

In the fields of discovery, manufacturing and processing, we develop tubes for shipbuilding. Stainless Steel 304 Pipes for use in ship construction.

Oil and gas applications

SS Seamless steel pipes for oil casing and tubing for offshore and onshore Oil & Gas applications in the domains of Production, Exploration and Processing.

Mechanical and plant engineering and construction

Our pipes are primarily used in mechanical and plant engineering and construction in the following areas: food manufacturing, automobile technology, measurement and control technology, pumps, hydraulic cylinders, etc. Stainless Steel Seamless pipes is known as a half-finished product for fittings and tubes and pipes of flange output as a half-finished product for radially machined parts.

Automotive industry

In the automotive field, DMV products are used especially in the following areas: Other important areas of use are hydraulic braking systems.

Stainless Steel Seamless pipes for project service

The SS Seamless pipes are used in petroleum, Connecting water, gas and other common fluids. Seamless steel pipes are common and can be found in residential walls, labs, and commercial and industrial structures underground and inside them.

Stainless Steel Seamless pipes for high temperature and pressure service For high temperature and pressure operation, we sell a comprehensive range of Seamless steel pipes. The SS Seamless pipes are also used in the applications like containers, heating pipelines, and high temperature reheaters.

Main grade of stainless steel

Austenitic steel

TP304General-purpose stainless steel with good corrosion resistance for most applications. Used for: Bar rails, Boat railings, Canopy supports, Chemical processing equipment, Chemical tubing, Column covers, Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings (architectural), Traffic barriers, Water pipes.
TP304HHigher carbon content than 304L, for increased strength, particularly at elevated temperatures.
TP304LChemical plant and food processing equipment, where freedom from sensitization is required in plate thicknesses TP316/316L
TP316/316LUsed where higher corrosion resistance is required. Boat railings, Canopy supports, Chemical tubing, Column covers, Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings, Street (urban) furniture, Textile tubing, Traffic barriers, Water pipes.
TP316HSimilar oxidation resistance to TP 316. Main areas of application: Heat exchangers, furnaces, chemical and petrochemical plant.
TP321Heat exchanger tubing, Chemical processing tubing, Pressure tank tubing. Suitable for heat resisting applications to 800°C.
TP321HThis is the high carbon version of TP 321 which ensures greater creep resistance. Behaves much the same as TP 321 in oxidation resistance. Main applications: Heat exchangers, furnaces, boilers in chemical and petrochemical plant
TP316TiA titanium stabilized version of 316 used where good resistance to intergranular corrosion and high temperature strength is required.
TP317Chemical processing tubing, Dyeing equipment, Ink manufacturing equipment, Pulp & paper manufacturing equipment
TP347HFGMainly used for boilers in the termal power plant, reheaters and superheaters

Super-Austenitic steel

TP904LHigh resistance to general corrosion in e.g. sulphuric and acetic acids, crevice corrosion, stress corrosion cracking, pitting in chloride bearing solutions.

Ferritic and Martensitic Steel

TP405Used for applications where hardening upon cooling from high temperatures must be avoided. Has excellent long-time stability up to 1200°F.
TP410General purpose grade for use in mildly corrosive environments
TP430Mechanical & structural tubing, Architectural tubing, Heat exchanger tubing, Condensers, Re-heaters, Evaporators.


S31803Typically used in heat exchangers, gas scrubbers, fans, chemical tanks, flowlines, marine and refinery applications.
S32750Used in oil & gas, chemical process, power industries. At that heat-exchangers are main application.
S31254With high levels of chromium, molybdenum, and nitrogen is especially suited for high-chloride environments such as brackish water, seawater and other high-chloride process streams.


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