904L high quality stainless steel pipe

904L stainless steel is a non-stabilized austenitic stainless steel that contains a high percentage of nickel and chromium, along with additions of molybdenum and copper. This unique composition provides 904L with remarkable resistance to pitting and crevice corrosion, particularly in chloride environments. Unlike standard stainless steels, 904L is designed to perform exceptionally well in acidic conditions, making it a preferred choice for industries that deal with aggressive chemicals.

The 904L stainless steel pipe is manufactured through advanced techniques that ensure high quality and reliability. It is available in various sizes and dimensions, catering to the specific needs of different applications. The pipes are produced to meet stringent industry standards, ensuring that they can withstand high pressures and temperatures without compromising their structural integrity.

product details

specification

Product Name	904L stainless steel pipe
Standard	ASTM,JIS,DIN,GB,AISI,DIN,EN
Outer diameter	Round Pipe	4mm-200mm
	Square Pipe	1010mm-100100mm
	Rectangular Pipe	1020mm-50100mm
Wall Thickness	0.6mm-6.0mm
Length range	1-6 meters, Length can be customized
Error	±1%
Certification	ISO 9001 ，CE，API
Surface treatment	Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc.
Country of origin	China
Main Applications	1.Chemical Industry: Due to its excellent corrosion resistance, 904L stainless steel pipes are often used in chemical reactors, storage tanks, pipelines and other equipment, especially in environments that handle strong acids and alkalis.
	2.Oil and gas industry: In the process of oil and gas extraction, transportation and refining, 904L stainless steel pipe can resist stress corrosion cracking caused by chlorides and is suitable for marine environment and high temperature and high pressure conditions.
	3.Pharmaceutical industry: 904L stainless steel pipes are widely used in pharmaceutical equipment, pipelines and storage containers due to their good hygiene and corrosion resistance.
	4.Food processing: In food processing and beverage production, 904L stainless steel pipes can meet hygiene standards and prevent food contamination.
	5.Marine Engineering: Due to its resistance to seawater corrosion, 904L stainless steel pipes are suitable for offshore platforms, ships and other marine facilities.
	6.Power Industry: In some power equipment, 904L stainless steel pipes are also used as corrosion-resistant materials, especially in high temperature and corrosive environments.
Package	Simple packaging, reinforced packaging, wooden frame, metal frame, pallet, wrapping
Payment Term	TT, LC,Cash, Paypal, DP, DA,Western Union or Others.
After-sales service	1. Quality assurance period 2. Return and exchange policy 3. Delivery and acceptance assistance 4. Customer feedback collection

Product Display

Chemical Composition

C	Si	Mn	Cr	Ni	Mo	S	P
≤ 0.02	≤1.0	≤ 2.0	19.0～23.0	23.0～28.0	4.0～5.0	≤ 0.035	≤ 0.045

Mechanical Properties

Tensile Strength Kb (MPa)	Yield Strength σ0.2 (MPa)	Elongation D5 (%)	Hardness
≥490	≥220	≥35	≤ 90HRB

Physical Performance

Density(g/cm³)	Modulus of Elasticity(Gpa)	Coefficient of Thermal Expansion(10-6/°C)	Coefficient of Thermal Conductivity(W/m*K)	Resistivity(ΜΩ. cm)
8.0	195	15.5	12.0	74

Production process

Raw material preparation:
Select high quality alloying elements such as nickel, chromium, copper, molybdenum, etc. to ensure that they meet the chemical composition standards of 904L stainless steel.
Smelting:
The raw materials are melted in an electric arc furnace or induction furnace to form liquid metal. The temperature and composition need to be controlled during the melting process to ensure the uniformity and quality of the alloy.
Casting:
The molten metal is poured into a mold and cooled to form an ingot or block. Care must be taken during the casting process to control the cooling rate to avoid internal defects.
Heat treatment:
Heat treatment of the ingot, usually including forging and annealing, to improve its mechanical properties and organizational structure. Heat treatment can eliminate the stress generated during the casting process and improve the toughness and corrosion resistance of the material.
Rolling:
The heat-treated ingot is processed into the desired tube shape by hot rolling or cold rolling. Hot rolling is usually used for the production of large diameter tubes, while cold rolling is used for small diameter tubes.
Welding (if applicable):
For some types of 904L stainless steel pipes, welding may be required. The welding process requires the selection of appropriate welding materials and methods to ensure the quality and corrosion resistance of the weld.
Cooling and cutting:
After the rolled or welded tubes are cooled, they are cut to the length required by the customer.
Surface treatment:
Surface treatment of the pipe, such as pickling and polishing, is performed to remove surface oxides and impurities and improve corrosion resistance and aesthetics.
Inspection and testing:
Conduct quality inspection on finished pipes, including chemical composition analysis, mechanical property testing, non-destructive testing (such as ultrasonic testing, X-ray testing), etc., to ensure that the products meet standards and customer requirements.
Packaging and Shipping:
Qualified 904L stainless steel pipes are packed and ready to be shipped to customers.