Hot Dip Galvanized Steel Pipe-JIANGSU DINGJIN IRON & STEEL CO., LTD.

Characteristic

Hot dip galvanized steel pipes are widely used.

1. Pipelines for transporting low-pressure fluids such as water, gas, and oil

2. Petroleum industry, especially oil well pipelines, oil pipes and oil heaters in offshore oil fields, and used in chemical coking equipment.

3. Condensation cooler, coal distillation oil washing heat exchanger pipe

4. Mine pipe pile, mine tunnel support pipe

5. Urban/civil building pipelines

6. mechanical structure piping

7. Agricultural Equipment Piping

8. water and gas pipes

9. greenhouse piping

10. Scaffolding pipes

11. Building material pipeline

Mechancal Properties
Grade	Lower Yield Strength R_eL/MPa		Tensile Strength R_m/MPa	Elongation After Break A/%
Grade	t≤16mm	t＞16mm	Tensile Strength R_m/MPa	D≤168.3mm	D＞168.3mm
Q195	≥195	≥185	≥315	≥15	≥20
Q215	≥215	≥205	≥335
Q235	≥235	≥225	≥370
Q345	≥345	≥325	≥470	≥13	≥18
The yield strength value of Q195 hot dip galvanized steel pipe is for reference only, not as a delivery condition.

Nominal diameter, outer diameter, nominal wall thickness and out-of-roundness of hot dip galvanized steel pipe with outer diameter not greater than 219.1mm
Nominal Diameter (DN)	Outer Diameter (D)			Minimum Nominal Wall Thickness t	Out of Roundness
Nominal Diameter (DN)	Series 1	Series 2	Series 3	Minimum Nominal Wall Thickness t	Out of Roundness
6	10.2	10.0		2.0	0.20
8	13.5	12.7	-	2.0	0.20
10	17.2	16.0	-	2.2	0.20
15	21.3	20.8	-	2.2	0.30
20	26.9	26.0	-	2.2	0.35
25	33.7	33.0	32.5	2.5	0.40
32	42.4	42.0	41.5	2.5	0.40
40	48.3	48.0	47.5	2.75	0.50
50	60.3	59.5	59.0	3.0	0.60
65	76.1	75.5	75.0	3.0	0.60
80	88.9	88.5	88.0	3.25	0.70
100	114.3	114.0	-	3.25	0.80
125	139.7	141.3	140.0	3.5	1.00
150	165.1	168.3	159.0	3.5	1.20
200	219.1	219.0	-	4.0	1.60
Note 1: The nominal diameter in the table is the nominal size of the approximate inner diameter, not the inner diameter obtained by subtracting twice the wall thickness from the outer diameter. Note 2: Series 1 is a general series, which is a recommended series; Series 2 is a non-general series; Series 3 is a small number of special and special series.

Permissible deviation of outer diameter and wall thickness of hot dip galvanized steel pipe
Outer Diameter (D)	Permissible deviation of outer diameter		Wall thickness (t) allowable deviation
Outer Diameter (D)	Pipe	Pipe end (within 100mm from the pipe end)	Wall thickness (t) allowable deviation
D≤48.3	±0.5	-	±10%t
48.3＜D≤273.1	±1%D	-
273.1＜D≤508	±0.75%D	+2.4 -0.8
D＞508	±1%D or ±10.0 whichever is smaller	+3.2 -0.8

hot dip galvanized steel pipe galvanized layer 500g/m² weight factor
Nominal Wall Thickness/mm	Coefficient c
2.0	1.064
2.2	1.058
2.3	1.055
2.5	1.051
2.8	1.045
2.9	1.044
3.0	1.042
3.2	1.040
3.5	1.036
3.6	1.035
3.8	1.034
4.0	1.032
4.5	1.028
5.0	1.025
5.4	1.024
5.5	1.023
5.6	1.023
6.0	1.021
6.3	1.020
7.0	1.018
7.1	1.018
8.0	1.016
8.8	1.014
10	1.013
11	1.012
12.5	1.010
14.2	1.009
16	1.008
17.5	1.007
20	1.006

Product Name	hot dip galvanized steel pipe
Size	OD: 12-219mm(round)
	Thickness: 2-8mm
	Length: 5800-6000m or as per customers' requirements
Standard	GB, BS, ASTM, EN
Material	Q195-Grade B, SS330, SPC, S185
	Q215-Grade C,CS Type B, SS330, SPHC
	Q235---Grade D, SS400, S235JR, S235JO, S235J2
	Q345---SS500, ST52
Package	1) Big OD: in bulk;
	2) Small OD: packed by steel strips;
	3) Plastic bags;
	4) According to customer's requirement.
Advantage	1) reasonable price with excellent quality;
	2) abundant stock and prompt delivery;
	3) rich supply and export experience, sincere service.
*If you do not find what you are looking for, please call us now. If you have found it, we are happy to answer any questions or concerns you may have about galvanized steel grades and assist you through the purchasing process.