ASTM A213 16.5mm OD plain end stainless steel pipes sch10 stainless
steel water seamless tube
Stainless Steel Pipes Introduction
Stainless steel seamless steel pipe is a long strip of steel with a
hollow section and no joints around it. It is a steel pipe that is
resistant to weak corrosive media such as air, steam, and water,
and chemically corrosive media such as acid, alkali, and salt. Also
known as stainless acid-resistant steel pipe.
First, the thicker the wall thickness of the product, the more
economical and practical it is, and the thinner the wall thickness,
the higher the processing cost; secondly, the technology of the
product determines its limited performance, generally The precision
of seamless steel pipe is low: uneven wall thickness, low
brightness inside and outside the pipe, high cost of sizing, and
there are pits and black spots on the inside and outside that are
not easy to remove; third, its detection and shaping must be
processed offline. Therefore, it reflects its superiority in terms
of high pressure, high strength, and mechanical structural
materials.
Stainless steel seamless pipe is a steel pipe that is resistant to
weak corrosive media such as air, steam, and water, and chemically
corrosive media such as acid, alkali, and salt. Also known as
stainless acid-resistant steel pipe.
The corrosion resistance of stainless steel seamless pipes depends
on the alloying elements contained in the steel. Chromium is the
basic element for stainless steel to obtain corrosion resistance.
When the content of chromium in steel reaches about 12%, chromium
and oxygen in corrosive medium act to form a thin oxide film
(self-passivation film) on the surface of steel. , which can
prevent further corrosion of the steel matrix. In addition to
chromium, the commonly used alloying elements for stainless steel
seamless pipes are nickel, molybdenum, titanium, niobium, copper,
nitrogen, etc., to meet the requirements of various uses for the
structure and properties of stainless steel.
Stainless steel seamless pipe is a kind of hollow long round steel,
which is widely used in petroleum, chemical, medical, food, light
industry, mechanical instrumentation and other industrial
transportation pipelines and mechanical structural components. In
addition, when the bending and torsional strength are the same, the
weight is lighter, so it is also widely used in the manufacture of
mechanical parts and engineering structures. It is also commonly
used to produce various conventional weapons, barrels, shells, etc.
The difference between stainless steel seamless pipe and seamed
pipe
1. There are certain differences in the chemical composition of
stainless steel seamed pipes and stainless steel seamless pipes.
The steel composition of the production of seamless pipes is only
to meet the basic requirements of astm. The steel from which seamed
pipes are produced has a chemical composition suitable for welding.
For example, silicon, sulfur, manganese, oxygen and the mixture of
triangular ferrite and other elements in a certain proportion can
form a welding melt that is easy to transfer heat during the
welding process, so that all welds can be penetrated. Steel pipes
lacking the above chemical components, such as seamless pipes, will
cause various unstable elements during the welding process, which
are not easy to weld firmly and cannot be welded through.
2. The quality of the welded stainless steel pipe is better
controlled than that of the seamless stainless steel pipe.
Since the seamed stainless steel pipe is made of accurate
cold-rolled sheet according to the test, all defects are limited to
the weld. Seamless tubes are punched from stainless steel billets
by punching needles, causing a lot of tearing in the wall thickness
created by extrusion. The eddy test shows that the defective rate
of the slotted stainless steel pipe is generally smaller than that
of the seamless stainless steel pipe. Using ultrasonic testing, the
background noise of seamless stainless steel welded pipe is so
large that it is difficult to detect its shortcomings. However, the
background noise of the seamed stainless steel pipe is very low,
and it is easy to find the shortcomings.
3. The quality of seamed stainless steel welded pipe is more
precise and easier to control than stainless steel seamless pipe:
The production and manufacturing process of stainless steel
seamless pipe is to punch a hole into a stainless steel billet at a
temperature of 2200°f. At this high temperature, the tool steel is
punched and drawn to become soft and spirally formed from the hole.
. In that way the wall thickness of the pipe is uneven and the
eccentricity is high. The wall thickness difference of seamless
pipes is larger than that of seamed pipes. Because stainless steel
slotted tubes are made from precise cold-rolled sheets, the wall
thickness tolerances of the slotted tubes are small and the wall
thickness is very uniform across the circumference.
Application of stainless steel seamless pipe:
It is widely used as a fluid delivery pipe, such as oil, natural
gas, water, gas, steam, etc.
It is used as superheated steam pipe and boiling water pipe in
medium and low pressure boilers.
Heating surface of water-tube boilers used to manufacture high
pressure and above pressure in high pressure boilers
More widely used in furnace tubes for oil cracking, geological
drilling tubes and diamond core drilling tubes, etc.
Stainless Steel Pipes Parameter
| Product Name | 304 stainless steel seamless tubing |
| Steel Grade | 300 series |
| Standard | ASTM, ANSI, JIS, DIN, EN |
| Material | 304, 304L, 316 |
| Surface | Polishing, annealing, pickling, bright |
| Technique | Cold rolled |
| Wall thickness | 1mm-150mm(SCH10-XXS) |
| Outside Diameter | 6-2500mm |
| Lead time | 8-14 days after receipt of advance payment |
