Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of chemical plant uses erw steel pipes dn200 in China. Welcome to buy discount chemical plant uses erw steel pipes dn200 made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
Chemical Plant Uses ERW Steel Pipes DN200 are high-performance electric resistance welded (ERW) steel pipes specifically designed for chemical plant process piping systems, with a nominal diameter of DN200 (Outer Diameter 219.1mm). Manufactured in strict compliance with API 5L (PSL1/PSL2), ASTM A53 Gr.B, GB/T 9711, and HG/T 20553 (Chemical Industry Pipe Design Standard) standards, these pipes adopt premium carbon/low-alloy steel and advanced high-frequency ERW technology, featuring uniform weld quality, precise dimensional accuracy, excellent pressure-bearing capacity, and reliable chemical resistance. Engineered to meet the stringent requirements of chemical production-including corrosion resistance, high-temperature stability, leak-proof performance, and compatibility with various chemical media-they are widely used in chemical process pipelines, petrochemical fluid transmission, chemical plant water/gas systems, and industrial chemical storage and transportation projects worldwide, ensuring safe and stable operation of chemical production lines.
Basic Product Specifications
Product Name: Chemical Plant Uses ERW Steel Pipes DN200
Executive Standard: API 5L (PSL1/PSL2), ASTM A53 Gr.B, GB/T 9711, HG/T 20553 (Chemical Industry Standard), GB/T 3091
Quality Level: PSL1 (API 5L) as standard for general chemical media; PSL2 optional for high-purity or high-risk chemical transmission scenarios
Manufacturing Process: ERW (Electric Resistance Welding), high-frequency induction welding, steel strip forming, online weld annealing, cold sizing, straightening
Steel Grades Available: ASTM A53 Gr.B, API 5L X42/X46/X52, Q235B, 20#, Q345B (low-alloy for corrosive chemical environments)
Key Sizes: Nominal Diameter (DN): 200mm; Outer Diameter (OD): 219.1mm; Wall Thickness (WT): 6mm - 20mm (custom thick wall up to 25mm for high-pressure chemical processes)
Delivery Condition: As-welded (standard), Normalized (for high-temperature chemical service), Stress-relieved (for corrosive media environments)
Standard Length: 6m / 12m (12m preferred for reducing on-site welding joints in chemical plants); Custom fixed length available to match process pipeline layouts
Surface Finish: Black bare steel with anti-rust oil (internal & external); Hot-dip galvanized (HDG) coating, FBE coating, or 2PE anti-corrosion coating available on request (critical for chemical plant corrosive environments)
Pipe Ends: 30°/45° Beveled Ends (BE) for on-site welding (standard for chemical process connections); Plain Ends (PE) optional; Threaded ends available for low-pressure auxiliary pipelines
Application: Chemical plant process pipelines, petrochemical oil/gas transmission, chemical wastewater treatment systems, industrial steam/hot water pipelines, chemical storage tank connecting pipes, fertilizer/pesticide production line piping
Key Grade & Process Explanation
Steel Grades for Chemical Plants: ASTM A53 Gr.B and API 5L X42/X52 are the core grades for DN200 chemical plant ERW pipes. A53 Gr.B features a minimum yield strength of 240MPa, tensile strength of 415-540MPa, and elongation ≥20%, with good resistance to weak acids, alkalis, and chemical solvents-ideal for general chemical media transmission. Q345B (16Mn) grade offers higher strength (yield strength ≥345MPa) and better low-temperature toughness, suitable for high-pressure or low-temperature chemical process pipelines. X52 grade provides excellent weldability and corrosion resistance, meeting the requirements of petrochemical and high-risk chemical projects.
ERW Process for Chemical Plant Advantages: Advanced high-frequency ERW technology, using high-quality steel strips formed into a cylinder and welded with electric resistance welding, ensures uniform and defect-free weld seams. The weld seam undergoes online annealing to eliminate internal stress, making its mechanical properties consistent with the base metal-critical for preventing leakage in chemical pipelines. The process also enables high dimensional accuracy (outer diameter tolerance ±0.5mm), facilitating precise installation and connection with chemical equipment and valves, reducing on-site construction errors.
Chemical Plant Special Design: Optimized for chemical production environments, with strict control of sulfur (≤0.045%) and phosphorus (≤0.045%) content to reduce corrosion risk from chemical media. Precise wall thickness control ensures stable pressure distribution in chemical process pipelines. Optional hot-dip galvanized or FBE coating enhances resistance to acid, alkali, and salt corrosion, adapting to complex chemical plant environments (e.g., high humidity, corrosive gas). The pipe's smooth inner surface reduces fluid resistance and prevents chemical medium deposition, avoiding pipeline blockage and corrosion acceleration.
Dimensional Tolerance (API 5L PSL1 / HG/T 20553 Standard)
|
Item |
Standard Tolerance (DN200, OD219.1mm) |
|
Outer Diameter (OD) |
±0.5mm of nominal OD, ensuring precise connection with chemical flanges/valves |
|
Wall Thickness (WT) |
-12.5% ~ +15% of nominal thickness (strict control for high-pressure chemical processes) |
|
Out-of-Roundness |
≤1.0% of nominal outer diameter (≤2.19mm) for leak-proof chemical connections |
|
Straightness |
≤2.0 mm per meter length, facilitating chemical plant pipeline layout and installation |
|
Standard Length |
+150 mm, -0 mm (Single Random Length); custom length available to match chemical process design |
Mechanical Properties (ASTM A53 Gr.B, DN200 Chemical Pipe)
|
Mechanical Property |
Standard Requirement (Chemical Plant Service) |
|
Minimum Yield Strength (ReH) |
≥240 MPa (35 ksi) (A53 Gr.B); ≥345MPa (Q345B); ≥290MPa (X42) |
|
Tensile Strength (Rm) |
415 – 540 MPa (60 – 78 ksi) (A53 Gr.B) |
|
Elongation at Break (A) |
≥20% (A53 Gr.B); ≥19% (Q345B/X42) |
|
Flattening Test |
Qualified, no cracks or weld separation after testing (conforming to HG/T 20553 standard) |
|
Hydrostatic Test |
100% pressure test (≥1.0 times working pressure, minimum 6MPa), no leakage or deformation, critical for chemical process safety |
|
Weldability |
Excellent, suitable for SMAW, GMAW, SAW welding processes, low cold crack sensitivity, adapting to chemical plant on-site construction |
Note: Mechanical properties can be adjusted according to steel grade (A53 Gr.B/Q345B/X42/X52) and wall thickness, ensuring compatibility with different pressure levels (4MPa-10MPa) of chemical process pipelines. For high-temperature chemical service (≥200℃), normalized delivery condition is adopted to enhance high-temperature stability and creep resistance.
Chemical Composition (Heat Analysis, Max. %, ASTM A53 Gr.B)
|
Element |
C (Carbon) |
Mn (Manganese) |
P (Phosphorus) |
S (Sulfur) |
Si (Silicon) |
|
Limit |
≤0.30 |
≤1.20 |
≤0.045 |
≤0.045 |
≤0.40 |
Residual elements: Cu ≤0.20%, Ni ≤0.15%, Cr ≤0.15%, Mo ≤0.08% (max. %); LF furnace refining is adopted to optimize impurity morphology, improving resistance to chemical corrosion and stress corrosion cracking in chemical plant environments. Customizable chemical composition for harsh chemical media (e.g., strong acid, alkali, organic solvent) environments.
Manufacturing Process (ERW for DN200 Chemical Plant Pipe)
Raw Material Selection: High-quality ASTM A53 Gr.B, Q345B or API 5L X42 steel strips, strictly inspected for chemical composition and mechanical properties. The strips undergo pickling and oil removal to eliminate surface impurities, ensuring suitability for DN200 chemical plant pipe production and preventing chemical medium contamination.
Strip Forming: Steel strips are cold-formed into cylindrical shape with precise dimensional control, using intelligent forming rolls to ensure uniform wall thickness and roundness, with ellipse degree meeting HG/T 20553 standard (≤1.0% of OD), facilitating precise connection with chemical equipment.
ERW Welding: High-frequency electric resistance welding is used to achieve full-penetration longitudinal welding. The weld seam undergoes online annealing (850-900℃) to eliminate internal stress, ensure weld quality, and make the weld seam mechanical properties consistent with the base metal-critical for preventing leakage in chemical pipelines. Weld seam 100% online ultrasonic testing to eliminate welding defects.
Sizing & Straightening: Precision sizing to meet API 5L PSL1 and HG/T 20553 dimensional tolerances; hydraulic straightening to ensure straightness ≤2.0 mm/m, facilitating chemical plant pipeline layout and installation, reducing on-site alignment difficulty.
Non-Destructive Testing (NDT): 100% Ultrasonic Testing (UT) of weld seams; Eddy Current Testing (ECT) of pipe body for chemical service (per API 5UT and HG/T 20553 standards). Full weld seam inspection ensures no internal defects that could affect chemical pipeline safety.
Heat Treatment: As-welded condition as standard; Normalized or stress-relieved treatment optional for high-temperature or corrosive chemical environments. Computer-controlled heat treatment furnace adjusts parameters according to steel grade to ensure uniform heat treatment effect.
Finishing: Internal and external anti-rust oil coating to prevent corrosion during storage and transportation; Hot-dip galvanized/FBE/2PE anti-corrosion coating available on request (critical for chemical plant corrosive environments); end beveling (30°/45°) and marking to complete the production process.
Product Advantages (Tailored for Chemical Plant Applications)
Chemical Corrosion Resistance: Optimized low-sulfur and low-phosphorus composition, combined with optional hot-dip galvanized/FBE coating, enhances resistance to weak acids, alkalis, and chemical solvents, adapting to complex chemical plant environments.
Leak-Proof & High Safety: Adopting ERW process with 100% weld inspection and hydrostatic test, uniform weld quality, excellent pressure-bearing capacity (4MPa-10MPa), ensuring no leakage under chemical process pressure, protecting chemical production safety.
Precise Dimensional Accuracy: Strict control of outer diameter tolerance (±0.5mm) and roundness, ensuring seamless connection with chemical flanges, valves, and equipment, reducing on-site installation errors and improving construction efficiency.
Smooth Inner Surface: The pipe's smooth inner surface reduces fluid resistance and prevents chemical medium deposition, avoiding pipeline blockage and corrosion acceleration, ensuring stable flow of chemical media.
Cost-Effectiveness: ERW process features high production efficiency and low cost, balancing performance and economy for chemical plant projects, suitable for large-scale chemical pipeline construction.
Full Standard Compliance: Fully compliant with API 5L, ASTM A53, GB/T 9711, and HG/T 20553 standards, recognized by global chemical plant projects, with complete certification documents to support project acceptance.
Full Traceability: Complete heat number and batch records, with Mill Test Report (MTR) provided for each order, ensuring quality traceability and supporting chemical plant project inspection and maintenance.
Main Applications (Chemical Plant Scenarios)
Specialized for DN200 chemical plant process pipelines, widely used in:
Petrochemical plant oil, gas, and chemical solvent transmission pipelines.
Chemical plant wastewater treatment and recycling pipeline systems.
Industrial steam, hot water, and heat medium pipelines in chemical production lines.
Fertilizer, pesticide, and fine chemical production process piping.
Chemical storage tank connecting pipes and raw material/product transmission pipelines.
High-temperature and high-pressure chemical reaction kettle connecting pipelines (with normalized treatment).
Quality Inspection & Certification
Dimensional Inspection: Full inspection of outer diameter, wall thickness, length, straightness and out-of-roundness to meet API 5L PSL1 and HG/T 20553 tolerance requirements, ensuring compatibility with chemical plant equipment and pipelines.
Mechanical Property Testing: Tensile test, flattening test, bend test to verify yield strength, tensile strength and ductility; Charpy V-notch impact test (≥20J at 0℃) mandatory for chemical service; high-temperature tensile test optional for high-temperature chemical environments.
Hydrostatic Test: 100% pressure test at ≥1.0 times working pressure (minimum 6MPa), holding time per API 5L and HG/T 20553 standards, ensuring no leakage or permanent deformation, critical for chemical process safety.
Non-Destructive Testing (NDT): 100% Ultrasonic Testing (UT) for weld seams; 100% Eddy Current Testing (ECT) for pipe body; RT testing available on request to ensure weld integrity, avoiding chemical pipeline leakage risks.
Chemical Analysis: Heat analysis to confirm chemical composition meets ASTM A53 Gr.B, Q345B and API 5L X42 requirements, including strict control of harmful elements and carbon equivalent, ensuring chemical corrosion resistance.
Certification: Mill Test Report (MTR) provided for each order, with full heat number traceability; third-party inspection (SGS, BV) available on request to meet global chemical plant project acceptance standards.
Packaging & Delivery (Adapted for Chemical Plant Logistics)
Packaging: DN200 steel pipes are bundled with steel strips (6-8 strips per bundle), wrapped with waterproof woven cloth to prevent rust and damage during transportation and on-site storage; high-strength plastic end caps installed to protect pipe ends and internal surfaces, avoiding contamination by dust or moisture (critical for chemical media purity).
Marking: Each pipe is clearly marked with API 5L PSL1, ERW, DN200 (OD219.1mm), steel grade, size (OD×WT), heat number, batch number, length, manufacturing date and "Chemical Plant Pipe" identification, facilitating on-site identification and management.
Trade Terms: FOB, CIF, CFR, DAP, DDU all available, supporting various international trade cooperation methods for global chemical plant projects.
Shipping Ports: Major Chinese coastal ports (Qingdao, Tianjin, Shanghai, Ningbo), with professional loading equipment for DN200 steel pipes, ensuring efficient and convenient global transportation, supporting timely delivery for chemical plant project schedules.
Customization: Accept customized steel grades (A53 Gr.B/Q345B/X42/X52), wall thickness (6mm-25mm), lengths (matching chemical process design), pipe ends (custom bevel angles/threaded ends), and anti-corrosion coating (HDG/FBE/2PE) to meet specific DN200 chemical plant pipeline project requirements.
Contact Us
For quotation, stock availability, delivery lead time, and customized services of Chemical Plant Uses ERW Steel Pipes DN200, please contact our sales team. We have rich experience in supporting global chemical plant projects, providing API/ASTM/HG-standard DN200 ERW pipes, and professional technical support for on-site installation and chemical media compatibility testing, ensuring the safe and stable operation of your chemical production pipelines.
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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