Hebei Haihao Group

  • Alloy 800 UNS N08800 order confirmed by Russia clients

    Alloy 800 UNS N08800 order confirmed by Russia clients

    One month ago, we received an inquiry about Alloy 800 material from Russia. This inquiry including 3 items totally: 2 pieces 90 degree 610mm seamless elbow, one length 610x1500mm seamless pipe, one length 560x500mm pipe, it‘s a small quantity. As per ...
  • UNS S32750 material Characteristic

    UNS S32750 material Characteristic

    Sometimes we receive some orders about UNS S32750 material. It’s one kind of Super duplex stainless steel. This material is made of 25% chromium, 4% molybdenum and 7% nickel.  It has strong strength and corrosion resistance, and is mainly used in che ...
  • Super duplex UNS S31803 and duplex 2507 UNS S32750 pipes, fittings and flanges delivery to Shanghai Port

    Super duplex UNS S31803 and duplex 2507 UNS S32750 pipes, fittings and flanges delivery to Shanghai Port

    Today our Singapore clients order it’s finished. This order including duplex 2205(UNS S31803) and super duplex 2507(UNS S32750) pipe, fittings and flanges. As for this order, clients not only need fast delivery time 20 days but also the 100% PMI when ...
  • Shanghai 2D bend pipe delivery by sea

    Shanghai 2D bend pipe delivery by sea

    As shown in the picture below, the pipe bend in the picture is an order for a 2D carbon steel pipe bend required by an old customer in Shanghai. The customer’s carbon steel pipe fittings are basically purchased from our Hebei Haihao Group. ASTM A234 ...
  • Shanghai 2D elbows order

    Shanghai 2D elbows order

    At the beginning of last month, we received an order for carbon steel elbows from our old customer in Shanghai. The products are 2D elbows in sizes 200NB-600NB, which will eventually be used in projects in Africa. The order started very smoothly, with norm ...
  • Russia Client inquiry Nickel Based Alloy elbow and pipe used on oil refinery

    Russia Client inquiry Nickel Based Alloy elbow and pipe used on oil refinery

    Last week, one of Russia client come to us and express their requirements. They send us an inquiry about Incoloy 800 elbow and pipe. The quantity it’s small, DN600 elbow it’s 2 pieces. 610mmX9.53mmX1500mm pipe it’s one length, 560mmX9.53m ...
  • ASTM A420 WPL6 56

    ASTM A420 WPL6 56″ ELBOW DELIVERY TO INDIAN PORT

    One piece 56″ ASTM A420 WPL 6 90 degree elbow it’s delivery to Indian port today! This order it’s cofirmed in the middle of this month. It’s our regular client’s order. ASTM A420 WPL6 ELBOW Before this order finally confirmed, ...
  • Super duplex stainless 32750 and 32760

    Super duplex stainless 32750 and 32760

    Recently one of Singapore customer inquiry some pipes, fittings and flanges, most items material it’s Super Duplex Stainless 32750.We offered the price and got the order as per this material. But when we arrange the production. The customer inform th ...
  • Excellent product quality to win the trust of customers

    Excellent product quality to win the trust of customers

    We closed a deal with a Korean customer at the beginning of the year.  The Korean customer has strict requirements. Before placing the order, we inspected the factory twice and conducted strict tests on the samples, including product size, thickness, appea ...
  • Factors affecting welding quality of duplex stainless steel

    Factors affecting welding quality of duplex stainless steel

    Duplex stainless steels are a family of grades combining good corrosion resistance with high strength and ease of fabrication.Their physical properties are between those of the austenitic and ferritic stainless steels but tend to be closer to those of the ...
  • Duplex stainless steel-Evaluation of Metal Harmful Phase

    Duplex stainless steel-Evaluation of Metal Harmful Phase

    Duplex stainless steel (DSS) refers to stainless steel in which ferrite and austenite account for about 50% respectively. Generally, the content of less phase also needs to reach 30% at least. When the content of C is low, the content of Cr is 18% ~ 28%, a ...
  • The Indonesian customer's order of duplex stainless steel has been successfully completed

    The Indonesian customer’s order of duplex stainless steel has been successfully completed

    As mentioned in the previous article, our company and the customer finally determined the final test method. In order to ensure the quality of products and improve the customer’s trust in our company, all the manufacturing materials are directly take ...
  • Duplex stainless steel order from Indonesia

    Duplex stainless steel order from Indonesia

    Following the previous article, I continued to introduce the progress of the Indonesian order. After reaching an agreement with the customer to do ASTM G48 C experiment, the customer proposed to change it to ASTM G48 A. You must be curious about why the cu ...
  • Pitting experiment (ASTM G48 C) of duplex stainless steel ordered by Indonesian customer

    Pitting experiment (ASTM G48 C) of duplex stainless steel ordered by Indonesian customer

    In addition to ASTM A923 C mentioned above, the customer also provided another pitting test method, namely ASTM G48 C. In order to better understand the difference between the two, I now introduce ASTM G48 C. Method C – Critical Pitting Temperature T ...
  • Pitting experiment of duplex stainless steel ordered by Indonesian customer

    Pitting experiment of duplex stainless steel ordered by Indonesian customer

    The ferrite experiment was introduced in the first part. The experiment went well, but the pitting experiment was more twists and turns. Initially, the customer provided two tests: ASTM A923 C or ASTM G48 C. First, I will introduce ASTM A923 C, then ASTM G ...
  • Ferrite experiment of duplex stainless steel ordered by Indonesian customer

    Ferrite experiment of duplex stainless steel ordered by Indonesian customer

    Since the customer has such high requirements on the corrosion resistance of the material, it is natural that we are required to do pitting experiments after the production of the product, so as to verify the real corrosion resistance of the product. About ...
  • Differences between S31803 and S32205 material

    Differences between S31803 and S32205 material

    In the last article, we mentioned that our technical staff advised the customer to use S32205 instead of S31803. To introduce the difference between the two, we first need to introduce the metallographic structure and corrosion resistance of dual-phase ste ...
  • Duplex stainless steel order from Indonesia part1

    Duplex stainless steel order from Indonesia part1

    In mid-April,a new customer from Indonesia came to me and asked me to quote for his order of duplex stainless steel, which included steel pipes, pipe fittings and flanges. How did the client find me? Because when he searched online related keywords such as ...
  • The advantages of seamless steel tube in application

    The advantages of seamless steel tube in application

    Hebei Haihao Group is a manufacture specialized in producing flange, pipe fittings and steel pipe. Seamless steel pipes are everywhere in our life. The manufacturing process of seamless steel tube begins with solid round billet. Then the billet is heated t ...
  • We have exported a batch of A234 WPB caps to Malaysia

    We have exported a batch of A234 WPB caps to Malaysia

    Hebei Haihao Group is a professional manufacturer of flanges and pipe fittings. We not only have strong technical force, can produce standard, non-standard and customized high, medium, low pressure various specifications, various series of pipe fittings fo ...