Hot dip galvanized steel pipe is a pipe whose surface is coated with a hot-dip galvanized layer. Since zinc has corrosion resistance, the service life of hot-dip galvanized steel pipe is extended. Therefore, it is widely used in construction, water conser
Hot dip galvanized steel pipes are widely used.
Pipelines for transporting low-pressure fluids such as water, gas, and oil
Petroleum industry, especially oil well pipelines, oil pipes and oil heaters in offshore oil fields, and used in chemical coking equipment.
Condensation cooler, coal distillation oil washing heat exchanger pipe
Mine pipe pile, mine tunnel support pipe
Urban/civil building pipelines
mechanical structure piping
Agricultural Equipment Piping
water and gas pipes
greenhouse piping
Scaffolding pipes
Building material pipeline
| Chemical Properties | ||||||||||||||
| Grade | Class | C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo |
| Q195 | - | 0.12 | 0.30 | 0.50 | 0.035 | 0.040 | - | |||||||
| Q215 | A | 0.15 | 0.35 | 1.20 | 0.045 | 0.050 | ||||||||
| B | 0.045 | |||||||||||||
| Q235 | A | 0.22 | 0.35 | 1.40 | 0.045 | 0.050 | ||||||||
| B | 0.20 | 0.045 | ||||||||||||
| Q345 | - | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.15 | 0.20 | 0.30 | 0.50 | 0.30 | 0.012 | 0.10 |
| Mechancal Properties | |||||
| Grade | Lower Yield Strength ReL/MPa | Tensile Strength Rm/MPa | Elongation After Break A/% | ||
| t≤16mm | t＞16mm | 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 | ||
| Series 1 | Series 2 | Series 3 | |||
| 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 | |
| Pipe | Pipe end (within 100mm from the pipe end) | ||
| 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. | |
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