• SHANDONG TONGMAO SPECIAL STEEL CO., LTD
    Yam
    Thank you very much for your sincere service. The quality of your products has always been very good. We are very relieved and hope to have more cooperation in the future.
  • SHANDONG TONGMAO SPECIAL STEEL CO., LTD
    Khue
    Thank you for your products. Your products are of good quality and considerate service. We are very confident and willing to cooperate with you. We hope there will be opportunities for cooperation with other products in the future.
Contact Person : Anne
Phone Number : +8618963570880
Whatsapp : +8618963570880

A789 A312 304 Hot Rolled Seamless Steel Pipe Mirror Finish 904L ASTM A269 Tubing

Place of Origin China
Brand Name TONGMAO
Certification ISO9001 MTC
Model Number steel pipe
Minimum Order Quantity 5tons
Price US $1,000-3,000/ Ton
Packaging Details Standard Packing
Delivery Time 7-15days
Payment Terms L/C, T/T
Supply Ability 1000tons/year

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

x
Product Details
Standard ASTM,AISI Section Shape Round
Grade ASTM A269 A789 A312 Trademark TONGMAO
Wall Thickness 0.25-40mm Transport Package Standard Packing
High Light

Mirror finish astm a312 304

,

A789 hot rolled seamless steel pipe

,

904L astm a269 tubing

Leave a Message
Product Description

904L ASTM A269 A789 A312 304 Hot Rolled Seamless Steel Pipe Mirror Finish:

Stainless steel pipe is a hollow long cylindrical steel, his scope of application as a fluid pipeline, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipeline and mechanical structural components. Stainless steel pipes are made of acid and heat resistant billets, heated, perforated, sized, hot rolled and cut.

 
Manufacturing method:
 
According to different production methods, it can be divided into hot rolled tube, cold rolled tube, cold drawn tube, extrusion tube and so on.
1.1. Hot rolled stainless steel seamless tubes are generally produced on automatic tube rolling sets. The solid tube blank is checked and cleared of surface defects, cut into the required length, centering on the perforated end face of the tube blank, and then sent to the heating furnace for heating, and perforated on the punch machine. In the perforation at the same time continuous rotation and forward, under the action of the roll and the top, the tube blank gradually formed a cavity, called the wool tube. Then it is sent to the automatic pipe mill to continue rolling. Finally, the wall thickness of the whole machine is adjusted, and the sizing machine is adjusted to meet the specification requirements. It is an advanced method to produce hot rolled seamless steel tube with continuous rolling tube set.
1.2 If you want to obtain seamless tubes with smaller size and better quality, you must use cold rolling, cold drawing or a combination of both methods. Cold rolling is usually carried out on a two-high mill. The steel pipe is rolled in an annular pass consisting of a circular groove with a variable section and a stationary conical top. Cold drawing is usually carried out in 0.5 ~ 100T single chain or double chain cold drawing machine.
1.3. Extrusion method: The heated tube blank is placed in a closed extrusion cylinder, and the perforated rod moves together with the extrusion rod to extrude the extruded parts from the smaller die hole. This method can produce smaller diameter steel pipe.
This kind of steel pipe can be divided into stainless steel seamless steel pipe and stainless steel welded steel pipe (seam pipe) two categories, according to the different manufacturing process can be
For: hot rolling, extrusion, cold drawing and cold rolling these basic types, according to the shape of the section and can be divided into round pipe and special-shaped pipe, widely used is round steel pipe, but there are some square, rectangular, semicircular, hexagonal, equilateral triangle, octagonal special-shaped stainless steel pipe.
For the steel pipe under fluid pressure to carry out hydraulic test to test its pressure capacity and quality, under the specified pressure does not leak, wet or expansion for qualified, some steel pipe according to the standard or the requirements of the side test, flaring test, flattening test.
Seamless stainless steel tube, also known as seamless stainless steel tube, is made of steel ingot or solid tube blank by perforation of wool tube, and then made by hot rolling, cold rolling or cold dialing. The specifications of seamless steel pipe are expressed by the number of millimeters of outer diameter * wall thickness.
 
Product Description​:
 

Commodity Name Stainless steel pipe
Type Seamless
Standard ASTM A554, A249,A269,A270 , A312
Material 904L, 304L
Outer Diameter 6-620mm
Wall Thickness 0.25-40mm
Length 6-12m or customize
Tolerance OD±1% WT±5% or as per customers' request
Surface Satin/Hairline/Mat/Pickling
400G,500G,600G or 800G Mirror finish
Test Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT
Application Construction, Industry, Petroleum, Chemical, Boiler and Exchanger
Packing Bundle packing
Beveled end or pained
Marking as customers' request
Plastic caps at ends
Wooden box packing


Pictures show:
A789 A312 304 Hot Rolled Seamless Steel Pipe Mirror Finish 904L ASTM A269 Tubing 0
A789 A312 304 Hot Rolled Seamless Steel Pipe Mirror Finish 904L ASTM A269 Tubing 1
 
FAQ
 
Can you send products to my country?
Sure, we can. If you do not have your own ship forwarder, we can help you.
Will you delivery the goods on time?
Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not.Honesty is our company's tenet.
How can I get a quotation from you ?
You can leave us message, and we will reply every message in time. Or we may talk on line by Trademanager.
And you can also find our contact information on contact page.
How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them