Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of q420c national standard submerged arc welding pipe in China. Welcome to buy discount q420c national standard submerged arc welding pipe made in China here from our factory. Quality products and low price are available.
Product introduction
LSAW steel pipes can be divided into UOE steel pipes, JCOE steel pipes and HME steel pipes according to their forming methods. UOE steel pipe is a single steel plate, which is pre-bent at the edge, after U-shaped forming, O-shaped forming, internal welding, external welding, mechanical cold expanding and other processes. JCOE steel pipe is pre-welded, formed and cold-expanded after welding according to "J-C-O-E". HME steel pipe is formed by mandrel rolling method according to "C-C-O", welded and cold-expanded.
Environmental protection and sustainable development;
In the process of producing submerged arc welded steel pipes, we always adhere to the concept of environmental protection and sustainable development. The low energy consumption and low emission production technology we adopted not only reduced the negative impact on the environment, but also reduced energy consumption. Our production process strictly abides by environmental laws and regulations, reduces the discharge of waste water and waste gas by recycling and reusing wastes, and realizes the efficient utilization of resources. This commitment to environmental protection not only reflects our social responsibility, but also provides customers with green and environmentally friendly product choices.
Impact resistance:
Our submerged arc welded steel pipe is famous for its excellent impact resistance. In the process of design and manufacture, we pay special attention to the toughness and strength of steel pipes, so as to ensure that steel pipes can maintain structural integrity and stability even under extreme temperature changes and strong external impact. This kind of high-performance steel pipe is suitable for various harsh working environments, such as high-pressure pipelines for oil and natural gas, and industrial applications that need to withstand heavy loads and impacts.
Surface treatment technology:
We adopt a series of advanced surface treatment technologies to enhance the corrosion resistance and aesthetics of submerged arc welded steel pipes. These technologies include sand blasting, painting and zinc plating, which not only improve the durability of steel pipes, but also enhance their protective performance under various environmental conditions. Our surface treatment technology ensures the long service life of steel pipes even in harsh climate and corrosive media.
Outer Diameter and Wall Thickness
| NPS | DN | OD | Sch10 | Sch20 | Sch30 | Std | Sch40 | Sch60 | XS | Sch80 | Sch100 | Sch120 | Sch140 | Sch160 | XXS | Sch5s | Sch10s | Sch40s | Sch80s |
| 1/8 | 6 | 10.3 | 1.45 | 1.73 | 1.73 | 2.41 | 2.41 | 1.24 | 1.73 | 2.41 | |||||||||
| 1/4 | 8 | 13.7 | 1.85 | 2.24 | 2.24 | 3.02 | 3.02 | 1.65 | 2.24 | 3.02 | |||||||||
| 3/8 | 10 | 17.1 | 1.85 | 2.31 | 2.31 | 3.20 | 3.20 | 1.65 | 2.31 | 3.20 | |||||||||
| 1/2 | 15 | 21.3 | 2.41 | 2.77 | 2.77 | 3.73 | 3.73 | 4.78 | 7.47 | 1.65 | 2.11 | 2.77 | 3.73 | ||||||
| 3/4 | 20 | 26.7 | 2.41 | 2.87 | 2.87 | 3.91 | 3.91 | 5.56 | 7.82 | 1.65 | 2.11 | 2.87 | 3.91 | ||||||
| 1 | 25 | 33.4 | 2.90 | 3.38 | 3.38 | 4.55 | 4.55 | 6.35 | 9.09 | 1.65 | 2.77 | 3.38 | 4.55 | ||||||
| 1 1/4 | 32 | 42.2 | 2.97 | 3.56 | 3.56 | 4.85 | 4.85 | 6.35 | 9.70 | 1.65 | 2.77 | 3.56 | 4.85 | ||||||
| 1 1/2 | 40 | 48.3 | 3.18 | 3.68 | 3.68 | 5.08 | 5.08 | 7.14 | 10.15 | 1.65 | 2.77 | 3.68 | 5.08 | ||||||
| 2 | 50 | 60.3 | 3.18 | 3.91 | 3.91 | 5.54 | 5.54 | 8.74 | 11.07 | 1.65 | 2.77 | 3.91 | 5.54 | ||||||
| 2 1/2 | 65 | 73 | 4.78 | 5.16 | 5.16 | 7.01 | 7.01 | 9.53 | 14.02 | 2.11 | 3.05 | 5.16 | 7.01 | ||||||
| 3 | 80 | 88.9 | 4.78 | 5.49 | 5.49 | 7.62 | 7.62 | 11.13 | 15.24 | 2.11 | 3.05 | 5.49 | 7.62 | ||||||
| 3 1/2 | 90 | 101.6 | 4.78 | 5.74 | 5.74 | 8.08 | 8.08 | 2.11 | 3.05 | 5.74 | 8.08 | ||||||||
| 4 | 100 | 114.3 | 4.78 | 6.02 | 6.02 | 8.56 | 8.56 | 11.13 | 13.49 | 17.12 | 2.11 | 3.05 | 6.02 | 8.56 | |||||
| 5 | 125 | 141.3 | 6.55 | 6.55 | 9.53 | 9.53 | 12.70 | 15.88 | 19.05 | 2.77 | 3.40 | 6.55 | 9.53 | ||||||
| 6 | 150 | 168.3 | 7.11 | 7.11 | 10.97 | 10.97 | 14.27 | 18.26 | 21.95 | 2.77 | 3.40 | 7.11 | 10.97 | ||||||
| 8 | 200 | 219.1 | 6.35 | 7.04 | 8.10 | 8.18 | 10.31 | 12.70 | 12.70 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 | 2.77 | 3.76 | 8.18 | 12.70 | |
| 10 | 250 | 273.1 | 6.35 | 7.80 | 9.27 | 9.27 | 12.70 | 12.70 | 15.09 | 18.26 | 21.44 | 25.40 | 28.58 | 25.40 | 3.40 | 4.19 | 9.27 | 12.70 | |
| 12 | 300 | 323.9 | 6.35 | 8.38 | 9.53 | 10.31 | 14.27 | 12.70 | 17.48 | 21.44 | 25.40 | 28.58 | 33.32 | 25.40 | 3.96 | 4.57 | 9.53 | 12.70 | |
| 14 | 350 | 355.6 | 6.35 | 7.92 | 9.53 | 9.53 | 11.13 | 15.09 | 12.70 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 3.96 | 4.78 | |||
| 16 | 400 | 406.4 | 6.35 | 7.92 | 9.53 | 9.53 | 12.70 | 16.66 | 12.70 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 4.19 | 4.78 | |||
| 18 | 450 | 457.2 | 6.35 | 7.92 | 11.13 | 9.53 | 14.27 | 19.05 | 12.70 | 23.83 | 29.36 | 34.96 | 39.67 | 45.24 | 4.19 | 4.78 | |||
| 20 | 500 | 508 | 6.35 | 9.53 | 12.70 | 9.53 | 15.09 | 20.62 | 12.70 | 26.19 | 32.54 | 38.10 | 44.45 | 50.01 | 4.78 | 5.54 | |||
| 22 | 550 | 558.8 | 6.35 | 9.53 | 12.70 | 9.53 | 22.23 | 12.70 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | 4.78 | 5.54 | ||||
| 24 | 600 | 609.6 | 6.35 | 9.53 | 14.27 | 9.53 | 17.48 | 24.61 | 12.70 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | 5.54 | 6.35 | |||
| 26 | 650 | 660 | 7.92 | 12.70 | 9.53 | 12.70 | |||||||||||||
| 28 | 700 | 711.2 | 7.92 | 12.70 | 15.88 | 9.53 | 12.70 | ||||||||||||
| 30 | 750 | 762 | 7.92 | 12.70 | 15.88 | 9.53 | 12.70 | ||||||||||||
| 32 | 800 | 812.8 | 7.92 | 12.70 | 15.88 | 9.53 | 17.48 | 12.70 | |||||||||||
| 34 | 850 | 863.6 | 7.92 | 12.70 | 15.88 | 9.53 | 17.48 | 12.70 | |||||||||||
| 36 | 900 | 914.4 | 7.92 | 12.70 | 15.88 | 9.53 | 19.05 | 12.70 | |||||||||||
| 38 | 950 | 965.2 | 9.53 | 12.70 | |||||||||||||||
| 40 | 1000 | 1016 | 9.53 | 12.70 | |||||||||||||||
| 42 | 1050 | 1066.8 | 9.53 | 12.70 | |||||||||||||||
| 44 | 1100 | 1117.6 | 9.53 | 12.70 | |||||||||||||||
| 46 | 1150 | 1168.4 | 9.53 | 12.70 | |||||||||||||||
| 48 | 1200 | 1219 | 9.53 | 12.70 | |||||||||||||||
| 52 | 1300 | 1320.8 | |||||||||||||||||
| 56 | 1400 | 1422.4 | |||||||||||||||||
| kg/meter=(OD-TK)*TK*0.02466 | |||||||||||||||||||
Specifications

LSAW STEEL PIPE production flow

Raw Material Inventory Statistics-Raw Material Incoming Inspection-Raw Material Visual & Dimensional Inspection-End Tab Welding-Plate Ultrasonic Test-End Milling-Rust Removal and Cleaning of Plate-Edge Crimping-Cold Forming-Tack Weld-Weld Inspection and Repair-Internal Wall Dedusting-Inside Welding-Outside Welding-Remove Slag and End Tab & Take macroscopic samples-UT Test before Expansion(Optional items)-R.T test before-Expanding-Mechanical-Expansion-Hydrostatic Testing-Repair of Pipe End Welding-Pipe End Beveling-U.T Test after Expanding-R.T Test after Expanding-Pipe Ends Magnetic Particle Inspection(Optional items)-Dimension Inspection, Weighing, Length Measurement-Pipe End Residual Magnetic Inspection-Marking and Installing Pipe Cap-Storage-Delivery Inspection-Transshipment and Delivery
ERW STEEL PIPE production flow

Material preparation-Uncoiling , Flattening , Shearing and Butt Welding-Loop Storing-Forming system-Welding-Post-weld heat treatment (PWHT)-Air cooling water-Online UT test-Sizing and straightening-Cutting length-On-demand water pressure test-Final product inspection
Certifications

API 2B

API 5L

GOST

ISO 9001

EN 10219

EN 10210
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