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ASTM A554 Seamless Stainless Steel Pipe A312 A270 SS 201 309S Mirror Polished Tube

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ASTM A554 Seamless Stainless Steel Pipe A312 A270 SS 201 309S Mirror Polished Tube

Country/Region	china
City & Province	qingdao shandong

Product Details

ASTM A554 A312 A270 Seamless Ss Pipe 201 304 304L 309S 316 316L Mirror Polished Square Round Welded Tube

What does ASTM A312 mean?

This specification covers seamless and straight-seam welded austenitic steel pipe intended for high-temperature and

general corrosive service.ASTM A312 is an American Standard specification which covers seamless, straight-seam welded,

and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.

What is ASTM A554?
ASTM A554 Square Tube is part of the A554 specification. This specification covers pipes that require mechanical

properties, corrosion resistance and appearance characteristics. The specification can have any material grade made tubes.

What is the difference between 304 stainless steel and 316 stainless steel?
Product Description

Name	304 316 Stainless Steel Round Square Pipe Welded Pipe Seamless Pipe Tube with Polished
Standard	ASTM A554,ASTM A312
Material Grade	201,202,304,316,316L,430
Size Range	139mm-1600mm ETC.
Thickness	0.5-30mm
Length	6m or as customers' request
Tolerance	a) Outer Diameter: +/- 0.2mm
	b) Thickness: +/- 0.02mm
	c) Length: +/- 5mm
Surface	180G, 320G Satin/Hairline 400G, 600G Mirror finish
Application	handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc
Test	Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT
Chemical Composition of Material	Material Composition	201	202	304	316L	430
	C	≤0.15	≤0.15	≤0.08	≤0.035	≤0.12
	Si	≤1.00	≤1.00	≤1.00	≤1.00	≤1.00
	Mn	5.5-7.5	7.5-10	≤2.00	≤2.00	≤1.00
	P	≤0.06	≤0.06	≤0.045	≤0.045	≤0.040
	S	≤0.03	≤0.03	≤0.030	≤0.030	≤0.030
	Cr	13-15	14-17	18-20	16-18	16-18
	Ni	0.7-1.1	3.5-4.5	8-10.5	10-14
	Mo				2.0-3.0
Mechanical Property	Material Item		201	202	304	316
	Tensile Strength		≥535	≥520	≥520	≥520
	Yield Strength		≥245	≥205	≥205	≥205
	Extension		≥30%	≥30%	≥35%	≥35%
	Hardness (HV)		<105	<100	<90	<90

Product display

Application

Shipping:

1. WORLDWIDE SHIPPING. (Except some countries and APO/FPO)
2. Goods delivered by 20" , 40" FCL/LCL by quantity or customer's request.
3. Customers specifying freight forwarders or negotiable shipping methods!
4. Delivery Time: 10-30days after conformed or according to quantity.

FAQ

Q1: Are you a factory or trading company?

A1: We are a Chinese manufacture of steel pipes with both factories and trading companies.

Q2.How can you ensure the quality of your product?

A2.All products have to go through three checks in the whole manufacturing process,it includes production,cutting sheets and the packing.

Q3.What is your delivery time and the supply ability?

A3.The delivery time normally within 15~20working days,we can supply about 15,000tons every month.

Q4.What kind of equipment in your factory?

A4.Our factory have advanced five-eighth roller rolling,cold rolling production equipment on the roll,advanced processing and testing equipment,which makes our product better quality with efficiency.

Q5.About the complaint,quality problem,etc aftersales service,how do you handle it?

A5.We will have certain colleague to follow our order accordingly for each order with professional after-sales service. If any claim happen, we will take our responsibility and compensate as per contract. For better serve our client, we'll keep tracing feedback of our products from clients and that's what make us different from other suppliers. We're customer care enterprise.