304h/X6crni18-11/ 1.4948 / S30409 Seamless Stainless Steel Pipe--Chemical Containers

• Type: Stainless Steel Pipes
• Standard: ASTM, AISI, GB, JIS, DIN, EN
• Grade: Austenitic Pipe
• Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS
• Shape: Round
• Technique: Cold Rolled
• Model NO.: 304H
• Surface Treatment: Pickling
• Tolerance: -+10%
• Processing Service: Bending, Welding, Decoiling, Punching, Cutting
• Pipe Form Type: Seamless Steel Pipe
• Transport Package: Wooden Case
• Trademark: xintongda
• Origin: China
• HS Code: 730441100
• Production Capacity: 15000ton/Year

Product Description

Product Description

Product Name	Stainless steel Pipe
Grade	304H
Standards	JIS, AISI, ASTM, GB, DIN, EN
Diameter	1/8''-36''    10.3mm-914.4mm
Thickness	1mm-70mm
Length	5000mm-12000mm,or customize
Surface	AP,BA,2B,or others
Pipe Ends	Bevel end,Plain end,Bevel both ends,Bevel large end,Bevel small end,or others

Application	petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,paper making,shipbuilding,boiler fields.
Quality and test	Radiography Test Report,PMI,Heat Treatment Charts,Manufacturer Test Certificate,etc.
Packing	Ply Wooden Boxes,PE Fabric Bundles,Standard seaworthy export packing,Plastic Bags, or as required
Delivery time	20-75 days

 

Product Parameters

Chemical Composition
 

Grade	C	Mn	Si	P	S	Cr	Ni
304H	0.04-0.10	≤2.00	≤0.10	≤0.045	≤0.03	18.00-20.00	8.00-11.00

Mechanical Properties

Grade	Tensile Strength ksi(MPa)	Yield Strength ksi(MPa)	Elongation (%)	Hardness (Brinell)	Hardness Rockwell
304H	≥75(515)	≥30(205)	≥35	≤192HBW	≤90HRB

 The ASTM A312 Size Tolerance

Standard	Outside Diameter					Thickness	Length
ASTM A312		O.D.≤	48.26mm	+0.40mm	-0.80mm	Nominal Thickness ±12.5%	0mm to +6mm
	48.26mm <	O.D.≤	114.3mm	±0.80mm
	114.3mm <	O.D.≤	219.08mm	+1.60mm	-0.80mm
	219.08mm <	O.D.≤	457.2mm	+2.40mm	-0.80mm
	457.2mm <	O.D.≤	660.4mm	+3.20mm	-0.80mm
	660.4mm <	O.D.≤	836.6mm	+4.00mm	-0.80mm
	863.6mm <	O.D.		+4.80mm	-0.80mm

 

The stainless steel alloys AISI 304 and AISI 304L are the best known and most widely used chromium-nickel steels. Their excellent corrosion resistance, high strength and low carbon content make these austenitic steels particularly suitable for applications requiring welding.

304, 304H and 304L all possess the same nominal chromium and nickel content and thus possess the same corrosion resistance, ease of fabrication and weldability. The difference between 304, 304H and 304L is the carbon content which is >0.03, >0.05 and <0.03 respectively.

The carbon content of 304H (UNS S30409) is restricted to 0.04-0.10%, which provides optimal high temperature strength.

The carbon content of 304L (UNS 30403) is restricted to a maximum of 0.03%, which prevents sensitization during welding.

The carbon content of 304 (UNS 30400) is restricted to a maximum of 0.08%. Thus 304 is not useful for corrosive applications where welding is required such as tanks and pipes where corrosive solutions are involved, thus, 304L is preferred. And its lack of a minimum carbon content is not ideal for high temperature applications where optimal strength is required, thus, 304H is preferred. Thus 304 is typically restricted to bars that will be machined into components where welding is not required or thin sheets that are formed in articles such as kitchen sinks or cookware that are also not welded.

Carbon content has a strong influence on room temperature strength and thus the specified minimum tensile properties of 304L are 5 kilopounds per square inch (34 MPa) lower than for 304 (515 MPa). However, nitrogen also has a strong influence on room temperature strength and a tiny addition of nitrogen produces 304L with the same tensile strength as 304. Thus, practically all 304L is produced as dual certified 304/304L, meaning it meets the minimum carbon content of 304L and also meets the minimum tensile strength of 304.

 

Company Profile

 

 

 

 

 

FAQ

1.Are you a factory or a trading company?

We are a company with two mill and one warehouse,produce Stainless Steel/(Super)Duplex Steel/ Nickel Alloy seamless tube&pipes.
But we also can provide welded stainless steel pipes and pipe fittings, coils, sheets, bar, plates etc.

2.Do you have any certificate?

We have approvals of ISO9001:2015,ISO14001:2015,ISO45001:2018, BV Ocean& Offshore Ship Classification Societies, GOST, TUV, PED AD2000 etc.
And will get ABS/NORSOK/DNV/CU-TR(EAC) soon.

3.What is your delivery time?

It mainly depends on your demanded volume and material grade. The time of delivery is usually around0.5- 1 month(1*40HT as usual).
We can send it out in 5 days if it has stock.

4.What is your payment terms?

Our usual payment term is 30% deposit and the rest against B/L. L/C is also acceptable. And the shipping terms are EXW,FOB, CFR,CIF.Whichever you like.

5.How can you guarantee the quality of my goods?

All material are 100% PMI tested and measured before shipping. We also accept third part inspection andEN10204.3.1B Mill test certificate for all materials.

6.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 and we sincerely do business with them, sustain our service level before and after every deal.