GB/T 3087 Seamless Steel Pipe For Boiler Tube

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of gb/t 3087 seamless steel pipe for boiler tube in China, featured by quality products and low price. If you're going to wholesale durable gb/t 3087 seamless steel pipe for boiler tube made in China, welcome to get pricelist and free sample from our factory.

 

Introduction of GB/T 3087 seamless steel pipe

GB/T 3087 seamless steel pipes are usually manufactured through hot rolled or cold drawn process. After production is completed, both need to undergo normalizing heat treatment to eliminate internal stress and make the steel pipe more uniform and stable.

Specification

Product name	Seamless Steel Pipe For Boiler Tube
Place of origin	Tianjin China
Brand	WL
Standard	GB/T 3087
Material grade	10#, 20#
Out diameter	DN6-DN900
Wall thickness	1mm-100mm
Length	4m-12m or customized length
Technique	Hot rolled or cold drawn(rolled)
Surface treatment	Black painting, varnish painting, anti-corrosion coating or as per clients' requirements
Test	Ultrasonic test, Hydraulic test, Bending test, etc.
Delivery condition	Normalizing condition
Usage	Boiler tube

Chemical composition %

Grade	C	Si	Mn	P,max	S,max	Cr,max	Ni,max	Cu,max
10#	0.07-0.13	0.17-0.37	0.35-0.65	0.025	0.020	0.15	0.30	0.20
20#	0.17-0.23	0.17-0.37	0.35-0.65	0.025	0.020	0.25	0.30	0.20

Note: The nitrogen content in steel produced by oxygen converter smelting should not exceed 0.008%. When the supplier can ensure qualification, no analysis is required.

Mechanical properties

Grade	Tensile strength(Mpa)	Yield strength,min(Mpa)		Elongation,min(%)
		S≤16mm	S>16mm
10#	335-475	205	195	24
20#	410-550	245	235	20

The permissible deviation of OD of GB/T 3087 seamless steel pipe

Technique	Permissible deviation/mm
Hot rolled(expand) steel pipe	±1%D or ±0.50, take the greater number
Cold drawn(rolled) steel pipe	±0.75%D or ±0.30, take the greater number

The permissible deviation of wall thickness of hot rolled(expand) steel pipe

Technique	OD/mm	S/D	Permissible deviation/mm
Hot rolled	≤102	-	±12.5%S or ±0.40, take the greater number
	>102	≤0.05	±15%S or ±0.40, take the greater number
		>0.05-0.10	±12.5%S or ±0.40, take the greater number
		>0.10	＋12.5%S －10%S
Hot expanded	-	-	＋17.5%S －12.5%S

The permissible deviation of wall thickness of cold drawn(rolled) steel pipe

Technique	Wall thickness	Permissible deviation/mm
Cold drawn(rolled)	≤3	±12.5%S or ±0.15, take the greater number
	>3-10	＋12.5%S －10%S
	>10	±10%S

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Applications

GB/T 3087 seamless steel pipe is a key material for the manufacturing of low and medium pressure boilers, it is used to manufacture the internal pipeline system of boilers, including superheated steam pipes, boiling water pipes, water-cooled wall pipes, economizers, reheaters, superheater pipes, and smoke pipes, etc.

In additions, GB/T 3087 seamless steel pipe is also used for steam pipeline system and fluid transportation.

FAQ

Q: Can you provide some samples?

A: We can provide free samples for you so that you can understand the quality of our products. But the transportation costs not be included.

Q: How is the quality of your products?

A: Our products are manufactured strictly according to production standard. So we can guarantee the best quality.

Q: Can I visit your factory?

A: Of course, warmly welcome to your visit. Please let us know your schedule and we will pick you up.

Q: What is your delivery time?

A: In stock: within 7 days. Out in stock: depending on quantity in 30 days.

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