Product Description
Seamless pipe, as the name suggests, is a pipe without a seam or a
weld-joint. Seamless Steel Pipe is made from a solid round steel
‘billet’ which is heated and pushed or pulled over a form until the
steel is shaped into a hollow pipe.The billet has to be heated
first, then stretched and finally pushed or rolled over a frame or
form until the pipe is hollow. A seamless steel pipe is a circular
pipe having a hollow section and no seams around it. The seamless
steel pipe is made of carbon steel, alloy steel, stainless steel
ingot or solid tube blank, and then is made by hot rolling, cold
rolling or cold drawing. Seamless pipes are considered superior to
welded pipes as they are built using monolithic steel billets, with
intrinsic mechanical strength, without seam welds.Seamless steel
pipe is a tubular section or hollow cylinder, usually but not
necessarily of circular cross-section, used mainly to convey
substances which can flow — liquids and gases (fluids), slurries,
powders and masses of small solids.
Seamless steel pipes are characterized by a perfect finishing that
is flawless and desirable, resulting in higher demand. They are
manufactured in circular, rectangular, or square shapes, and the
pipes are tubular (hollow) since most of them carry flowing
substances such as gases, liquid, slurries, and powders.Seamless
steel is strong and durable because it does not weld, neither does
it have joints; this implies that the pipe has a uniform structure
that ensures even distribution of strength.Seamless steel pipes
(ASTM and API 5L) adopt their shape by passing through a perforated
tube.A hot rolled seamless steel pipe manufacture is from forging
billet, perforating, rolling, and shaping. The tubing is
manufactured through an industrial extrusion process and is used to
manufacture thick-walled seamless steel pipes and large diameter
pipes.
On the other hand, cold drawn seamless steel pipes use the
cold-drawn technology, which is suitable for pipes that are of
small diameter and thin-walled since they have a lower material
strength. It is also useful when the goal is to manufacture a
stunning pipe with a smooth internal surface. During the extrusion
process, the seamless steel pipes can only roll using a low alloy
structure, carbon structural steel, or an alloy structure.
The international standards for seamless steel pipes include API
5L, API 5CT, ASTM A106, ASTM A179, ASTM A789, DN17175, EN10216,
etc.If you have detailed standards or tech requirements, please
contact us. We will discuss them in depth.
Advantages
1.No welds: Seamless steel pipes are made from one piece of steel
billet, without any welds. This avoids welds that might happen
during welding. By eliminating potential weaknesses from welding,
the pipe becomes stronger overall.
2.Higher compressive strength: Seamless steel pipes have higher
strength. They lack welds, so their structure is more even. This
gives them higher compressive strength. This makes seamless steel
pipes more suitable in high-pressure and high-temperature
environments.
3.Better corrosion resistance: Seamless steel pipes have a smooth
surface, reducing the chance of corrosion. The welds are even.
Seamless steel pipes are more reliable in applications that need
corrosion resistance.
4.Suitable for high and low-temperature environments: Seamless
steel pipes are good for high and low-temperature environments.
They don’t crack easily.
5.Precise dimensions and stable shape: Seamless steel pipes are
usually more precise in size and more stable in shape than welded
ones. This is better for bigger applications, like making precision
machinery and equipment.
Process of SS316 304 Seamless well casing satinless steel pipes
line:
Specifications
SS316 304 6 5/8inch seamless welded stainless steel casing pipes
Item
| 304 304L 316L 316 Stainless Steel Tube/TP316L Seamless Stainless Steel Pipe |
| Standard | ASTM A213, A312, ASTM A269,ASTM A778, ASTM A789, DIN 17456,DIN
17457,DIN 17459, JIS G3459, JIS G3463, GOS T9941, EN 10216, BS3605, GB13296,etc. |
Material
| 201,202,301,304,304L,304N,XM21,304LN,309S,310S,316,316Ti, 316L,316N,316LN,317,317L,321,329,etc. |
Specifications | Wall thickness | 1.0-150mm(SCH10S-XXS) |
| Outside diameter | 3.0-2500mm(1/8"-100") |
| Length | 6m,5.8m,8m,11.8m,12m or as required. |
Surface
| Pickling, annealing, polishing, bright, sand blast, hair line, etc. |
Price Term
| Ex-work, FOB, CFR, CIF, or as required. |
Payment Term
| T/T, L/C, Western Union. |
Export to | Singapore, Canada, Indonesia, Korea, USA, UK, Thailand, Saudi Arabia, Vietnam, Iran, India, Peru, Ukraine ,Brazil, South Africa, etc. |
MOQ
| 500kg |
Delivery Time
| Prompt delivery or according to order's quantity. |
Package
| Export standard package: bundled wooden box, suit for all kinds of
transport, or be required. |
Application
| widely used in petroleum, chemical, medical, food, light industry,
machinery, instrument and other industrial pipeline and mechanical
structure parts, etc. |
More Details
Related Products
Certificate
Advanced technology, Strict inspection process:
Oasis Oil Tools co.,ltd has 20 years experience in Water Filter
Mesh Screens/Water Well Sand Filters, we strive for technical
innovations to improve quality of products.Our products not only
have the features of trustworthy quality, safety and energy save
but also beautiful appearance and low maintanemance.
Small profits but quick turnover:
Our Production will offer you a relatively and reasonable lower
price, which means our customer can get more profite with a cheap
price.
Premium and comprehensive sale system:
With a comprehensive sale system including before sales service,
in-sale service and after sale service, we have won a good
reputation at home and abroad. Also it is a important reason why so
many customer to choose us.
Please contact with us for more details.
Our techinical team will give you the best choice.
Mail: oapipe@163.com
Whatsapp:+8613949678537
