Black Annealed Steel Pipe

Inquiry

Product Name: Black Annealed Steel Pipe/Tube

Standard: ASTM A500, BS1387, GB3091, ASTM A53 , EN39

Material: Q345A, Q345B, 20#, 45#, Q235, SS400

Type: Round,Square and Rectangular

Application: Structure Pipe

Certification: CE

Brand: AIYIA

Origin: China

Product Introduction

Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. The purpose is to reduce hardness, improve machinability; reduce residual stress, stabilize size, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects.

Round Black Annealed Steel Pipe

Out Daeter (mm)	Wall Thicknes (mm)	Length (mm)
21.3	0.6-3.00	0.3-12
26.9	0.6-3.00	0.3-12
33.4	1.0-3.0	0.3-12
42.3	1.0-4.0	0.3-12
48.3	1.0-4.0	0.3-12
60.3	1.5-4.0	0.3-12
76.1	1.5-4.0	0.3-12
88.9	1.5-9.5	0.3-12
114.3	2.0-9.5	0.3-12
141.3	3.0-9.5	0.3-12
168.3	3.0-12.0	1.0rn-12
219.1	3.2-12.0	1.0-12
273	3.2-12.0	1.0rn-12
323.8	6.0-15.0	1.0-12
355.6	8.0-15.0	1.0-12
406.4	8.0-20.0	1.0-12

Square Black Annealed Steel Pipe

Size(mm)	Wall Thicknes(mm)
16×16	0.4~1.5
18×18	0.4~1.5
20×20	0.4~1.5
25*25	0.6-2.0
30×30	0.6-4.0
34*34	1.0-2.0
35*35	1.0~4.0
38×38	1.0~4.0
40×40	1.0~4.5
44×44	1.0~4.5
45×45	1.0~5.0
50×50	1.0~5.0
60×60	1.5~5.0
70×70	2.0-6.0
75×75	2.0-6.0
80×80	2.0-6.0
85-85	20-6.0
95*95	2.0-8.0
100×100	2.0-8.0
120×120	4.0-8.0
150×150	6.0~10.0
180×180	6.0~12.0
200×200	6.0~12.0
220×220	6.0~14.0
250×250	6.0~14.0

Rectangular Black Annealed Steel Pipe

Size(mm)	Wall Thicknes(mm)
10×20	0.6~1.5
14×21	0.6-1.5
15×30	1.5-1.5
15×38	0.6-1.5
20×30	0.6-2.0
20×40	0.8-2.0
20×50	1.0-2.0
22×35	0.9-2.0
25×40	0.9~3.75
25×65	1.0-2.0
30×40	1.0-3.75
30×45	1.0-3.75
30×50	1.0~4.0
30×60	1.0-4.5
40×50	1.0~4.5
40×60	1.0~5.0
40×80	1.5~5.0
40×100	2.0~5.0
50×60	2.0~5.0
50×80	2.0-5.0
50×100	2.0~8.0
60×80	2.0~6.0
80×100	2.0~8.0
120×60	2.5~10
120×80	2.5~10