• WELCOME TO HAOHUA
    High Alloy Materials
    High Alloy Materials

     

    seamless stainless steel and nickel-based alloy tubes and pipes are our everyday passion and our history at salzgitter mannesmann stainless tubes. as early as 1885 reinhard and max mannesmann invented a rolling process for the production of seamless steel tubes in remscheid, Germany. in the 1890s they developed it futher until it reached marketability: the production method they invented was the pilger process, which still is widely in use today.

    Our group integrates the tradition of three seamless stainless steel worlds (Mannesmann, Dalmine and Vallourec). Resulting in High AlloyStainlessfrom this international merger in 1994, High Alloybecame a part of Salzgitter group in 2003 and adjusted its name to Salzgitter Mannesmann Stainless Tubes in 2008.
    With an international network of plants and offices, we are a global top player in our markets and a consistently reliable business partner, ensuring quick and customer focused answers to changing market requirements.Our customers profit from one of the most comprehensive product ranges in our business:
    · from small instrumentation tubing to large pipe sizes with outside diameters from 6 to 250 mm (from 0.24 up to 9.84 inches) and with wall thicknesses from 0.5 up to 50 mm (from 0.02 up to 1.97 inches)· in materials from standard austenitic stainless, duplex and super-duplex steels to highly sophisticated nickel-based alloys this variety offers highest corrosion resistance, heat resistance and/or high-temperature, high-strength materials.

    We combine high quality products for critical environments with efficient and reliable services: our customers thus enjoy a supportive personal account management.
    Ongoing cycles of investment ensure that we work according to the latest technical standards. This gives us the trustworthiness to equip the so called critical spotsof customersplants, products and processes with the special qualities of our tubes and pipes.
    Typically, these criticalservice conditions are defined e.g. by
    · high temperatures
    · high pressure
    · aggressive media (acids or basic)

    Characterization of heat resistant materials
    Table 1 lists the international designations for selected SMSTTubes materials having improved austenite stability. The stability of the austenite in CrNi and CrNiMo steels is achieved by increasing the nickel content over that of standard 18/8 CrNi and 18/8/2 CrNiMo steels, and more especially by additions of nitrogen, which is particularly effective in promoting the austenite stability.
    Typical properties of austenitic heat resistant materials include:
    · high creep rupture strength above 550°C
    · outstanding resistance to high-temperature corrosion and oxidation
    · excellent processing characteristics.

    High-temperature corrosion and oxidation
    Although the loads that act on tubes in heat resistant materials are many and varied, they can be determined by calculation and can be controlled by appropriate materials selection and correct design. However, experience has shown that external influences occur during the service life of plants, which cannot be predicted at the planning and design stage, as they largely result from the actual operating conditions to which the tubes are exposed.
    Most of these influences are related to high-temperature corrosion. Within the limits of the permissible temperature ranges,heat resistant austenitic steels generally exhibit excellent resistance to combustion gases with sufficient excess air.
    To withstand the service conditions, the sensitivity of the material to oxidation on the steam-side is an important factor.
    Regarding the scaling behaviour of superheater pipes in a conventional power station, the following influencing factors have to be taken into account when considering flue gases:
    · flue gas temperature
    · tube wall temperature
    · tube position
    · heat transfer by radiation
    · fuel composition
    · flue gas composition (e.g. reducing streaks)
    · firing principle (e.g. dry or fused ash handling)
    · ash content in flue gas
    · erosion
    These external influencing factors often determine the service life of a plant.

    Corrosion-Resistant Alloy

    product/thickness
    (mm)

    equivalent

    1t

    1.6t

    2t

    3t

    4t

    5t

    6t

    8t

    10t

    12t

    14t

    16t

    20t

    25t

    30t

    35t

    40t

    50t

    remark

    Alloy 59
    UNS N06059

    Alloy59(VDM)

    o

    O

    O

    O

    O

    O

    O

    O

    ASTM B575
    ASME SB575

    Alloy C-276
    UNS N10276

    Hastelloy
    C276

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B575
    ASME SB575
    JIS NW0276

    Alloy C-22
    UNS N06022

    Hastelloy
    C22

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B575
    ASME SB575
    JIS NW6022

    Alloy B-2
    UNS N10665

    Hastelloy
    B2

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B333
    ASME SB333

    Alloy 400
    UNS N04400

    Monel 400

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B127
    ASME SB127
    JIS NW4400

    Alloy 825
    UNS N08825

    Incoloy
    825

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B424
    ASME SB424
    JIS NcF825

    Alloy 20
    UNS N08020

    Carpenter
    20Cb3

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B463
    ASME SB463

    Alloy 201
    UNS N02201

    Nickel 201

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B162
    ASME SB162
    JIS NW2201

    Heat-Resistant Alloy Inventory

    product/thickness
    (mm)

    equivalent

    1t

    2t

    3t

    4t

    5t

    6t

    8t

    10t

    12t

    14t

    16t

    20t

    25t

    30t

    40t

    50t

    remark

    Alloy 625
    UNS N06625

    Inconel
    625

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B443
    ASME SB443

    Alloy 600
    UNS N06600

    Inconel
    600

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B168
    ASME SB168
    JIS NcF600

    Alloy 601
    UNS N06601

    Inconel
    601

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B168
    ASME SB168
    JIS NcF601

    Alloy 800H/HT
    UNS N08810
    UNS N08811

    Incoloy
    800H/HT

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM B409
    ASME SB409
    JIS NcF800H

    Titanium ASTM B265

    product/thickness
    (mm)

    equivalent

    1t

    2t

    3t

    4t

    5t

    6t

    8t

    9t

    10t

    12t

    15t

    18t

    20t

    remark

    Grade 2

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    O

    ASTMB265

    Duplex/Super Austenitic Stainless Steel

    product/thickness
    (mm)

    equivalent

    1t

    2t

    3t

    4t

    5t

    6t

    8t

    9t

    10t

    12t

    14t

    16t

    20t

    25t

    30t

    remark

    254SMO
    UNS S31254

    O

    O

    O

    O

    O

    185N
    UNS S31254

    O

    O

    O

    O

    O

    O

    O

    O

    ASTM A240

    DP3W
    UNS S39274

    O

    O

    O

    O

    O

    O

    O

    O

    O

    329J4L
    UNS S32506

    O

    O

    O

    O

    O

    O

    O

    O

    NAS254N
    UNS S32053

    SUS 836L

    O

    O

    O

    O

    O

    O

    Contact us about thickness which are not listed in this inventory.

     

    Friendly link: Stainless coils tubing | Titanium Alloy steel pipes | U tubes | Finned tubes | Ferritic Stainless Steel Pipes | Duplex Stainless steel pipes | Austenitic stainless steel pipes | Nickel Alloy steel pipes |
    JIANGSU HAOHUA INDUSTRY GROUP
    Tel: 0086-512-58220050 Fax:0086-512-58810865 E-mail: sales@haopipe.com
    Add: No.17,Southeastern Avenue, Economic Development Zone (South Area),Zhangjiagang City, Jiangsu Province, China.
    辽宁11选5微信群