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GB/T 14291 Q235A Q235B Welded Steel Tubes for Mine Liquid Service

Welded Steel Tubes for Mine Liquid Service GB/T 14291 Q235A Q235B

Spec:
Material:Q235A Q235B Q345A Q345B
Size Range:OD:4-1200mm
WT:0.3-200mm
General Length:4-12m
Tolerance:
According to the following tables or customers’ request.

TABLE 1 Mechanical Property

Grade	Tensile strength N/m	Lower yield strength / N/m	Elongation A% Not less than
Grade	Tensile strength N/m	Lower yield strength / N/m	D≤168.3	D＞168.3
Q235A,Q235B	375	235	15	20
Q295A,Q295B	390	295	13	18
Q345A,Q345B	470	345	13	18
Note : Tensile test arbitration time is based on longitudinal sample.

Table 2 Outer Diameter,Wall Thicknes,Theoretical Weight and Test Pressure

Norminal Outer Diameter(D)/mm	Norminal Wall Thickness(S)/mm	Theoretical Weight/(kg/m)	Test Pressure/MPa
Norminal Outer Diameter(D)/mm	Norminal Wall Thickness(S)/mm	Theoretical Weight/(kg/m)	Q235A,Q235B	Q295A,Q295B	Q345A,Q345B
21.3	2.5	1.16	15	15	15
21.3	3	1.35	15	15	15
21.3	3.5	1.54	15	15	15
25	2.5	1.39	15	15	15
25	3	1.63	15	15	15
25	3.5	1.86	15	15	15
25	4	2.07	15	15	15
26.9	2.5	1.50	15	15	15
26.9	3	1.77	15	15	15
26.9	3.5	2.02	15	15	15
26.9	4	2.26	15	15	15
31.8	2.5	1.81	15	15	15
31.8	3	2.13	15	15	15
31.8	3.5	2.44	15	15	15
31.8	4	2.74	15	15	15
33.7	2.5	1.92	15	15	15
33.7	3	2.27	15	15	15
33.7	3.5	2.61	15	15	15
33.7	4	2.93	15	15	15
38	2.5	2.19	15	15	15
38	3	2.59	15	15	15
38	3.5	2.98	15	15	15
38	4	3.35	15	15	15
40	2.5	2.31	15	15	15
40	3	2.74	15	15	15
40	3.5	3.15	15	15	15
40	4	3.55	15	15	15
42.4	2.5	2.46	15	15	15
42.4	3	2.91	15	15	15
42.4	3.5	3.36	15	15	15
42.4	4	3.79	15	15	15
48.3	2.5	2.82	14.6	15	15
48.3	3	3.35	15	15	15
48.3	3.5	3.87	15	15	15
48.3	4	4.37	15	15	15
51	2.5	2.99	13.8	15	15

51	3	3.55	15	15	15
51	3.5	4.10	15	15	15
51	4	4.64	15	15	15
51	4.5	5.16	15	15	15
57	2.5	3.36	12.4	15	15
57	3	4	14.8	15	15
57	3.5	4.62	15	15	15
57	4	5.23	15	15	15
57	4.5	5.83	15	15	15
60.3	2.5	3.56	11.7	14.7	15
60.3	3	4.24	14	15	15
60.3	3.5	4.90	15	15	15
60.3	4	5.55	15	15	15
60.3	4.5	6.19	15	15	15
63.5	2.5	3.76	11.1	13.9	15
63.5	3	4.48	13.3	15	15
63.5	3.5	5.18	15	15	15
63.5	4	5.87	15	15	15
152.4	5.0	18.18	9.3	11.6	13.6
152.4	5.5	19.93	10.2	12.8	14.9
152.4	6.0	21.66	11.1	13.9	15.0
152.4	6.5	23.39	12.0	15.0	15.0
152.4	7.0	25.10	13.0	15.0	15.0
159	4.0	15.29	7.1	8.9	10.4
159	4.5	17.15	8.0	10.0	11.7
159	5.0	18.99	8.9	11.1	13.0
159	6.0	22.64	10.6	13.4	15.0
159	6.5	24.45	11.5	14.5	15.0
159	7.0	26.24	12.4	15.0	15.0
159	8.0	29.79	14.2	15.0	15.0
159	9.0	33.29	15.0	15.0	15.0
168.3	4.5	18.18	7.5	9.5	11.1
168.3	5.0	20.14	8.4	10.5	12.3
168.3	5.5	22.08	9.2	11.6	13.5
168.3	6.0	24.02	10.1	12.6	14.8
168.3	6.5	25.94	10.9	13.7	15.0
168.3	7.0	27.85	11.7	14.7	15.0
168.3	8.0	31.63	13.4	15.0	15.0
168.3	9.0	35.36	15.0	15.0	15.0
177.8	4.5	19.23	7.1	9.0	10.5

Processing:High frequency resistance welding

Technical Delivery Conditions:Heat treatment

Widely used in the field of:Pulp delivery,gas draining ,mine drainage

Product Images:

Product Tags:

welded steel pipe

welding steel tubing

GB/T 14291 Q235A Q235B Welded Steel Tubes for Mine Liquid Service

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Categories	Welded Steel Tube
Brand Name:	TORICH
Model Number:	GB/T 14291
Certification:	ISO 9001 ISO 14001 TS 16949
Place of Origin:	China
MOQ:	5 Ton
Price:	USD 400-800 / Ton
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	40000 Ton/Year
Delivery Time:	45 days
Packaging Details:	Packing in wooden box，hexagonal bundles or other seaworthy ways.
Product Name:	Welded Steel Tubes for Mine Liquid Service GB/T 14291 Q235A Q235B
Material:	Q235A Q235B Q345A Q345B
Surface:	Galvanized
Application:	Pulp delivery，gas draining ，mine drainage
Shape:	Round
OD:	4-1200mm
WT:	0.3-200mm
Length:	4-12m