<menuitem id="ttd03"></menuitem>

    <bdo id="ttd03"><strong id="ttd03"></strong></bdo>

  • 欧美成人精品第一区二区三区,精品国产黑色丝袜高跟鞋,狠狠躁日日躁夜夜躁2022麻豆,亚洲熟妇另类久久久久久

    Hotline:+86 0635-887779

    PRODUCTS

    PRODUCTS

    Home - PRODUCTS - PRODUCTS

    Boiler tube

    Boiler tube

    "standard

    China National Standard

    GB/T 3087, GB/T 5310, GB/T 6479, GB/T 9948, GB/T 13296

    Japanese Industrial Standard

    JIS G 3456, JIS G 3461, JIS G 3462

    "use

    For boiler water wall, economizer, reheater, superheater and steam pipe manufacturing

    》Production specifications and materials

    Specifications: 20--356×4--70

    Material: 10, 20, 20G, 20MnG, 25MnG, 12CrMo, 12CrMoG, 15CrMo, 15CrMoG, 1Cr5Mo, 12CrMoVG, 12Cr1MoVG, 16Mn, 15MnV, 10MnWVNb, 12Cr2MO, 12SiMoVNb, etc.

    》Steel pipe manufacturing method:

    Hot rolled or cold drawn (rolled).

    "delivery status:

    GB/T3087 delivery status

    1. Hot-rolled steel pipes should be delivered in a hot-rolled condition or normalized condition.

    2. Cold drawn (rolled) steel pipes shall be delivered in normalized condition.

    GB/T5310, GB/T9948, GB/T647 steel pipes should be delivered in heat treatment

    欧美成人精品第一区二区三区,精品国产黑色丝袜高跟鞋,狠狠躁日日躁夜夜躁2022麻豆,亚洲熟妇另类久久久久久 尤物在线一区二区三区| 大又大又粗又硬又爽少妇毛片| 亚洲一区二三区好的精华液| 策驰影院观看策驰影院2023| 亚洲精品无码你懂的网站| 午夜爽爽爽男女免费观看一区二区| 无码人妻aⅴ一区二区三区| 欧美国产亚洲一区二区三区精品| 最好看的2018中文2019| 青青草99久久精品国产综合|