Our company always adheres to the goal of providing comprehensive, highly reliable, economical and practical blind plate flange, stainless steel plate flanges, en flanges for end users. The professional production team can provide customers with products with scientific design and reliable quality. Fast and efficient pre-sales, sales and after-sales services can also further provide convenience for customers. We will continue to improve corporate management capabilities, improve the technology content of 4 inch flange, and promote industrial upgrading. Customer satisfaction is our corporate pursuit. On the premise of ensuring product quality, our company continues to improve our pre-sales and after-sales services. Our company sincerely looks forward to every customer's consultation and cooperation, and our team will warmly welcome your arrival and strive to serve you. In the past development process, we insist on advancing with the times, the concept is constantly innovated, and the product structure is constantly adjusted. Due to the intensification of market competition at home and abroad, the rapid development of science and technology, the acceleration of product renewal and the increase of people's diversified demand for products, the manufacturing industry is developing to multi variety and small batch production. Having employees who respect knowledge, respect personality and strive hard is the internal requirement for the sustainable growth of our business. A strict quality management system has been created to ensure the quality of the products.
  • Steel Plate Flange
    Execution Standard:EN1092-1 type01
    Type/Model:Forged,Plate Flange
    Specification:DN15-DN600
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  • Steel Slip On Flange
    Company: HAIHAO
    Material: Forged ASTM A105
    Specification: DN25, Class 150, RF facing
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  • ASME Blind Flange
    Standard: ASME B16.5, material: carbon steel, stainless steel, alloy steel, connection type: bolted connection.
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  • Socket Weld Pipe Flange
    Connection Type: Socket weld, pipe inserted into socket and joined by fillet weld
    Application Scope: High-pressure, high-temperature, leak-proof piping systems
    Structural Feature:...
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  • Threaded Pipe Flange
    Standard: ASME B16.5; material: carbon steel, 316L stainless steel, chromium molybdenum steel; connection type: threaded connection.
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  • Steel Line Blanks
    We stick to ASME B16.48 from start to finish.
    Available in Figure‑8, paddle blank, and paddle spacer styles.
    Sizes run from 1/2” to 24”.
    We handle pressures from CL150 up to...
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  • Stainless Steel Forged Flange
    Our stainless steel flanges are produced in line with widely recognized international pipeline standards, namely ASME B16.5, ASME B16.47, EN1092-1, BS4504 and SANS1123. The product size covers...
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  • EN Slip-on Flange
    Standard: EN1092-1 Type 12
    Material: carbon steel, alloy steel, stainless steel
    Connection type: butt welding, bolted connection
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  • EN Weld Neck Flange
    Forged to EN 1092-1 Type 11 standard
    Butt-welding connection for high-integrity piping systems
    DN10-DN4000, PN2.5-PN400 pressure ratings
    Materials: P250GH, 13CrMo4-5,...
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  • EN Blind Flange
    Product: EN Blind Flange
    Standard: EN 1092-1
    Pressure Rating: PN6 (data sheet reference)
    Material: Forged steel (carbon, alloy, stainless grades)
    Connection Type: Bolted
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  • BS Plate Flange
    Execution Standard: BS4504
    Size Range: DN10 – DN4000
    Pressure Rating: PN2.5 – PN250
    Material Options: Carbon Steel (Q235, S235JR, S355JR), Stainless Steel (304, 316L), and...
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  • BS Weld Neck Flange
    Execution Standard: BS 4504
    Type / Model: Forged Weld Neck Flange
    Connection Type: Butt welding with bolted flange joint
    Available Materials: Q235, S235JR, S355JR, S355J0,...
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Dorothy Zehr star star star star star
Design is the source of quality, and quality is the guarantee of success. As you can see, the appearance of the company's products are very beautiful, and the quality is also very guaranteed.
Maria Torres star star star star star
In this era of rapid economic development, any enterprise that wants to grow rapidly needs to rely on a strong backing, and this professional supplier is our choice.
Edward Lawhorn star star star star star
This manufacturer focuses on product optimization and research. They did not blindly expand the industrial chain or increase production blindly but focused on the details, which is the manufacturer
Ricardo Clemons star star star star star
To win in the market competition, the first is quality, the second is quality, and the third is quality. So the products of this company are of good quality, and you can rest assured to buy them.
Angela Higginbotham star star star star star
In addition to selling products, this supplier also provides us with services such as design, planning, manufacturing, installation, commissioning and maintenance, and training of various products,
George Soares star star star star star
We have been cooperating with this company for many years. Among all suppliers, their attitude and product quality are excellent.
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We are highly regarded as the industry leader and have earned a well-founded reputation for providing high-quality 2 inch weldolet, 2 inch steel pipe cap with short lead times and competitive prices. As one of the most professional 4 inch flange manufacturers and suppliers in China, we are able to meet the needs of the majority of our customers. Please rest assured to wholesale high quality 4 inch flange made in China here from our factory. For price consultation, contact us.
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