• JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
    Raian Ionescu
    Material quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
Contact Person : Gao
Phone Number : 18751558002
Whatsapp : 8618751558002

Bright Annealed AP BA EP Stainless Steel Pipe TP316L SS Pipe Precision Tube

Place of Origin China
Brand Name DELTA
Certification ISO
Model Number 201 304 316L 321 310S 314 347 2205 2507 904L.etc
Minimum Order Quantity 500 kgs
Price 2400 - 3500 USD/Ton
Packaging Details standard packing for export
Delivery Time 5 - 12 days based on the quantity
Payment Terms T/T, Western Union, L/C
Supply Ability 10 Ton per week

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Product Details
Products BA Stainless Steel Pipe Grade 304 316L 321 2205 310S 904L.etc
Standard ASTM GB EN Length 6m Or As Request
Diameter 6 - 219mm Or As Clients Request Wall Thickness 0.4 - 8.0mm
Type Seamless Pipe Service Cutting
Other Shape Square, Rectangle
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Precision Tube Stainless Steel Pipe

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EP Stainless Steel Pipe

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Product Description

Bright Annealed AP BA EP Stainless Steel Pipe TP316L SS Pipe Precision Tube

 
Products Specification

 

Standard ASTM A213, ASTM A269, ASME SA213, ASME SA269
Pipe Type Bright Annealed Stainless Steel Tubing
Grades 304, 304L, 316, 316L, 321, 310S, 2205, 2507
Dimensions Outer Diameter (OD): 1.00 mm to 76.2 mm
Wall Thickness 0.2 mm to 6.0 mm
Length Up to 12 meters (custom lengths available upon request)
Manufacturing Process Cold Drawn, Bright Annealed, Seamless
Material Surface Finish Bright Annealed (BA), Mirror Polished, No. 4 Finish
End Type Plain End (PE), Beveled End (BE), Threaded End (TE)
Certifications ISO 9001, EN 10204 3.1 / 3.2, PED, ASME

 

AP: Acid Pickling. Use acidic solutions such as nitric acid and fluorous acid to remove the oxide layer of the steel pipe. Cheap and fast, but it is easy to cause grain boundary corrosion, and the inner and outer surfaces are rough and easy to have suspended impurities attached.

MP: Mechanical polishing. The brightness and effect of the oxide layer, holes, and scratches commonly used on the steel pipe surface depend on the type of processing method. In addition, although mechanical polishing is more beautiful, it will also reduce corrosion resistance, so it needs to be passivated when used in a corrosive environment. Moreover, there are often polishing material residues on the surface of steel pipes.

BA: Bright Annealing. During the drawing process, the steel pipe must be lubricated with grease and the crystal grains will be deformed due to processing. To avoid this grease remaining in the steel pipe, in addition to cleaning the steel pipe, you can also use high temperature to eliminate deformation during high-temperature annealing, use argon as the atmosphere in the furnace, and further clean the steel pipe by combusting argon with carbon and oxygen on the surface of the steel pipe. The surface produces a bright effect, so this method of using pure argon annealing heating and rapid cooling to brighten the smooth surface is called brilliant annealing, although using this method to brighten the surface can ensure that the steel pipe is fully clean and free from any external pollution. However, if the brightness of this surface is compared with other polishing methods such as mechanical, chemical, and electrolytic, it will feel like a matte surface. Of course, its effect is also related to the content of argon and the number of times of heating.

ValueAnnealingBright AnnealingFunctionReduce Internal Stresses and Increase DuctilitySimilar Objectives, but With a Surface Quality FocusAtmosphereTypically, Vacuum or AirControlled Environment to Avoid OxidationCostLowerHigherProcess StepsGradual Cooling After HeatingRapid Cooling After Heating in a Non-oxidizing EnvironmentSurface FinishMay Cause Oxidation and Poor Finish.Creates a Glossy, Bright Surface.ApplicationsMetalworking and General ManufacturingHigh-performance Applications.

 

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