Bright Annealed Tubes

Bright Annealed Tubes Description

Bright annealed stainless steel tubingis a kind of high precision steel tube material after finishing or cold rolling. Due to the advantages of no oxide layer both inside and outside wall, no leakage under high pressure, high precision, high finish degree, no deformation and flaring, no cracks flattening, precision bright annealed tube is mainly used to produce pneumatic or hydraulic components, such as air cylinder or gas cylinder. It can be seamless tube, and also welded pipe. The chemical components of precision bright annealed tube are C, Si, Mn, S, P, Cr.

Bright annealed stainless steel tubecan be used for industries like automobile, and mechanical parts which have higher requirements for steel pipe precision and surface finish. Bright annealed stainlesssteel tubes are not only for higher precision and finish requirements, its tolerance can be maintained in 0.02-0.08mm, so many mechanical processing users gradually replace seamless steel tube or round steel with precision bright annealed tube in order to save labor, material, and time.

The traditional annealing approach is performed in a so referred to as open furnace, where the atmospheric oxygen reasons scaling of the heat treated materials, which makes the surface rough. HUASHANG STEEL has developed a one of a kind bright annealing process, the heat treatment is carried out in a so-called closed furnace. The warmth handled materials is covered by means of an inter-fuel atmosphere, which ensures the oxygen cant enter the furnace or come in to contact with the substances and react to shape scale on or tarnish the materials. The surface end is clean, bright and precision, which is a top-notch beginning point for a similar system, like electro-polishing and mechanical polishing.

Especially for the annealed tubing with size greater than 12 meters, the ordinary pickling tube is very hard to clean the internal surface, however, with the bright annealing method, our tubing is much cleaner, smoother on both inner and outer surface. We use bright annealing method, the temperature of the furnace can reach greater than 1350℃, and the tolerance for the putting and real temperature can be controlled Within ±2℃, which is bright annealed stainless' s special advantage, compared with the regular one.

To ensure the quality, all tubes are done 100% PMI, 100% Hydraulic test, 100% inner cleaned by sponge,100% dimension test, and 100% surface test. What is more, our quality of precision drawn tubing is same to precision rolling but has more advantage on price? We are using the advanced cold drawn technology from Japan and Korean, making the close dimension controls. Huashang steel offers discount bright annealed seamless steel pipe used for instrument tubing, chromatography tubing, hydraulic tubing, high-pressure tubing, cleaned tubing, multi-core tubing.

Type Of Tube: Welded tubing and Seamless Tubing

Straight Tubes Bright Annealing Advantages

Bright Annealed Tubes Sizes

welded tubing size range

OD: 0.19mm--44.5mm, T.W: 0.08mm--3.81mm

Length: CUT TO LENGTH

The seamless straight tubing & bright annealed tubingsizes:

Bright Annealed TubeMaterials

Austenitic Stainless Steel:

TP304, TP304L, TP304H, TP304LN, TP316/TP316L, TP316H, TP316Ti, TP316LN, TP321, TP321H,TP317, TP317L, TP347, TP347H, TP310S, TP310H, TP904L, 254Mo. S30432, S31042, N08367

Duplex & Super Duplex Steel: S31500, S32101, S32003, S32304, S31803, S32205, S32750, S32760

Nickel Alloy Steel:

N06600, N06601, N06625, N07718, N08800, N08825, N10276, N04400, N05500, N02200, N02201, N08028, N08810, N08811, N08020, N10624, N10629, N10675

Bright Annealed Tubes Standard

ASTM A789, ASME SA789, EN10216-5, ASTM B163, ASTM B167, ASME SB163, ASME SB167, ASTM B668, ASME SB668, ASTM A269, ASME SB677, ASTM A213, ASME SA213, ASME SA269, ASMT A270, ASTM B622, ASTM B516

Heat Treatment: Bright Annealed

NDT: Eddy Current or Hydraulic test or UT

Chemical Composition of Nickel Alloy, Duplex steel & Austenitic Steel

Grade	C	Si	Mn	P	S	Cr	Ni	Mo	Ti	N	Cu	Fe	Al	Co	Zr	Nb	Tu	Va
	Max	Max	Max	Max	Max					Max	Max	Max	Max	Max
Nickel Alloy
Inconel 600/No6600/2.4816			1			14-17	≧72
Inconel 600/No6601/2.4851						21-25	58-63				1
Inconel 690/No6690						27-31	58
Inconel 625/No6625/2.4856						20-23	≧58		≦0.4			5	≦0.4
Inconel 718/No7718/2.4668						17-21	50-55					Remainder
Incoloy 800/No8800/1.4876		1				19-23	30-35					≧39.5
Incoloy 800H/No8810/1.4958		1				19-23	30-35					≧39.5		1
Incoloy 825/No8825/2.4858			1				38-46					≧22
C-276/No10276/2.4819			1				Balance										3-4.5
Monel 400/No4400/2.4360			2				≧63				28-34
Monel K-500/No5500							63				27-33	2
Alloy 20/No8020/2.4660		1	2			19-21	32-38					Balance				8C-1
Alloy 28/No8028		1				26-28	30-34					Remainder
Duplex Steel
S31803/1.4462		1	2			21-23
S32205/1.4462		1	2			22-23
S32750/1.4410						24-26
S32760/1.4501		1	1			24-26
Austenitic
304/1.4301		1	2			18-20	8-10.5
304L/1.4307		1	2			18-20
304H/1.4948		1	2			18-20
316/1.4401		1	2			16-18
316L/1.4404		1	2			16-18
316H/1.4919		1	2			16-18
316Ti/1.4571		1	2			16-18
321/1.4541		1	2			17-19
321H/1.4878		1	2			17-19			H
317/1.4449		1	2			18-20
317L/1.4438		1	2			18-20
347/1.4550		1	2			17-19
347H/1.4912		1	2			17-19
310S/1.4845		1	2			24-26
310H/1.4845		1	2			24-26
N08904(904L)/1.4539		1	2			19-23
S31254(254Mo)/1.4547			1

Bright Annealed Tube Pressure Calculation Formula

Pressure =(wall thickness * 2 * tensile strength of steel tube)/(outer diameter * coefficient)

Wall thickness =(pressure * outer diameter * coefficient)/(2* tensile strength of steel tube)

Steel tube pressure P<7Mpa coefficient S=8

7< steel tube pressure P<17.5 coefficient S=6

The pipe pressure P>17.5 coefficient S=4

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