黄大仙精选资料网站2020

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        Beijing Precision Import and Export Co., Ltd. is one of the largest supplier of Metals,Metal Powder, Chemicals and Equipment.
         
        The company has associations with largest manufactory of Aluminum, Steel, Chemicals in China, including SWA, Bao Steel, Fushun Special Steel, Jiangxi Tungsten Group, Sinopec, CNPC etc.  Our product is supplied strictly as per customer required specification, ASTM/ASME, JIS, DIN, GB and BS standards etc.   
         
        We have one Joint-Venture factory for Aluminium products in Kungshang Jiangsu province.The factory have got 6 Oil Hydraulic Pressers;Three 10-metre standing Quench Lathes;Two Annealing Aging Maching;two Smelting Furnace ;One Straightening Maching and Three ten-roller straightening Machine;We can make all grades of Aluminium and Aluminium alloy Bars,Tubes,Sheet,Strip and Profiles according to GB standard,ASTM or BS or NF or DIN or JIS Standard.Our monthly productive capability is 1000 tons,we can make according to customers' special requirement.
         
        The company is operating global network. Our firm is gold supplier on alibaba b2b web side more than 4 years and our product is supplied as per required brands and specification of the buyer.Our alibaba web is http://bjprecision.en.alibaba.com/
         
        Our team has always insisted on the "precision" and "Fast" enterprising spirit from the beginning of establishment, strived to produce, inspect, delivery and supply after-sales service meticulously, precisely and Fast. We have a professional QC team, which inspect every lot follow the required specification, ATP and brands before shipment and fully responsible to quality guarantee.
        High purity atomized spherical magnesium powder

           The specification of our high purity atomized spherical magnesium powder:

            Our Magnesium Powder produced based on the hot-magnesium reducer foundation. And with this production method, the amorphous boron powder has good characteristics like high purity, small particle sizes,wide application ranges and every index of the powder have already achieved the international advanced level. Many specifications of our amorphous boron powder can be used in the fields like airbag, military and civil industrial product, Welding material, missile main engine solid fuel and so on.

         

         

         

         

         
         

        type

        Particle distributing

        D50/µm

        Bulk density/ g/cm3

        Not less than

        granularity/µm

        percentage/%

        Not more than

        FMW350

        >=850

        5.0

         

        0.97

        >=600

        15.0

        <300

        40.0

        <250

        25.0

        <150

        5.0

        FMW180

        >=600

        0

         

        0.97

        >=300

        10.0

        <125

        20.0

        FMW120

        >=600

        0

        120+_10

        0.97

        >=300

        10.0

        >=150

        40.0

        <75

        30.0

        <45

        5.0

        FMW60

        >=100

        0

        60+_5

        0.95

        >=80

        22.0

        <20

        6.0

        FMW40

        >=75

        0.5

        40+_5

        0.90

        >=45

        40.0

        FMW20

         

         

        20+_4

        0.70

        FMW8

         

         

        8+_3

        0.50

        Note 1: there are two indexes indicating the specification: Particle distributing and D50 in the table, customers can choose only one way.

        Note 2: if customer has other specifications out of the table, should  negotiate by two parties, and sign in the contract.

        Amorphous Boron Powder

           Our Boron Powder produced based on the hot-magnesium reducer foundation. And with this production method, the amorphous boron powder has good characteristics like high purity, small particle sizes,wide application ranges and every index of the powder have already achieved the international advanced level. Many specifications of our amorphous boron powder can be used in the fields like airbag, military and civil industrial product, Welding material, missile main engine solid fuel and so on.

         

        contents
                name
        purity
        specification
         
        B86-89
         
        B90-92
         
        B93-94
         
        B95-97
        boron,%
        86-89
        90-92
        93-94
        95-97
        Total mg,%
        <12
        <5.0
        <5.0
        <1.5
        Insoluble material in H2O2,%
        <1.5
        <1.0
        <1.0
        <1.0
        Water soluble B,%
        <1.0
        <0.5
        <0.5
        <0.5
        H2O,%
        <0.5
        <0.5
        <0.5
        <0.5
        Average particle size,µm,µm[Fei standard]
        <1.0
        <1.0
        <1.0
        0.7-1.0
        Melting point
        2167 degree
        2167 degree
        2167 degree
        2167 degree
        Color
        Brown-black
        Brown-black
        Brown-black
        Brown-black
        Figure
        Amorphous
        Amorphous
        Amorphous
        Amorphous
         

        stainless steel pipes

        stainless steel pipes

        We are professional of supplying stainless steel pipes.

        Features:
        1) The main standards are 304, 304L, 316, 316L, 321, 321H, 310S, 347H
        2) Standards: GB/T14975-2002, GB/T14976-2002, GB13296-91, GB9948-88,
            ASTM A312, ASTM A213, ASTM A269, ASTM A511
        3)Size: As customer requestment

        Stainless Steel Bars

        Stainless Steel Bars

        We are professional of supplying stainless steel bars.

        Features:

        1) Main materials: 304, 321, 316, 316L, 317L, 310, 310S

        2) OD: 40 - 350mm

        3) Length:2---6 meter
        4) Main technical standards: astm312, 213, 269,etc
        5) Quality control: we test mechanical and chemical properties of our products in every procedure
        Steel Tube

        Steel Tube

        We are professional of supplying carbon structure steel cold draw and extruded tube seamless by standard GB/T3639,8162,3087,ASTM A106,A192, BS3059,3601,3602,6323, DIN1629,1630, JIS G3454

        1.Standard:GB/T3639,8162,3087,ASTM A106,A192,BS3059,3601,3602,6323,DIN1629,1630,JIS G34542.Grade:

        By ASTM:1005,1006,1008,1010,1015,1020,1025,1030,1035,1040,1045,1050,1055,1060,1065,

        1070,1080,1084,1016,1022,1026,1033,1037,1043,1046,1053,1060,1566,1572

        By DIN: St12,13,14,Ck10,Ck15,Ck22,Ck25,Ck30,Ck35,Ck40,Ck45,Ck50,60,67,15Mn3,21Mn4,30Mn4,

        36Mn4,40Mn4

        By BS:

        040A10,12,040A12,080A15,20,070M26,080M30,36,40,46,50,070M35,60,080A67,72,78,81,080A15,20,

        080M30,40,47,50

        By JIS:

        SPHD,SPCC,SPCD,SPCE

        3.Size: O/D 6-400mm Wall thickness 0.5-40mm

        4.Packing: exporting packing

        Tool Steel Bar

        Tool Steel Bar

        We are professional of supplying Tool steel  bar by standard ASTM A600,A681,A686, DIN 17350,GB/T1298,1299,9943

        1.Standard:ASTM A600,A681,A686, DIN 17350,GB/T1298,1299,9943

        2.Type:

        By ASTM:W1-7,W1A-8,W1-9,W2-9.5,W1A-10.5,11.5,W1A-12, W5,L1,L7, F1,S1,D3, D2, A2, 02,07,L6,H21,H10,H11,H12,H13,T1,T4,T5,T6,T15,M2,M3,M7,M35M41,M42

        By DIN: C70W1,W2,C80W1,W2,C85W2,C90W3,C100W2,C105W1,W2,C125W,C135W,90SiCr5,C75W3,

        140Cr3,100Cr6120W3,35WCrV7,X210Cr12,165CrMoV46,90MnV8,105WCr6,105WCr6,40CrMnMo7,55NiCrMoV6,

        55NiCrMoV6,X30WCrV93,X38CrMoV51,X40CrMoV51,S180-1,S18-1-2-5,S18-1-2-10,15,S12-1-4-5,S6-5-2
        3.Size:  Dia 1-400mm 

        4.Packing: exporting packing

        Diethylamine
        Diethylamine
        Test Items Index Analytic result
        High-class products First class products Qualified
        Appearance Colorless transparent liquid, without mechanical admixture Colorless transparent , without mechanical admixture
        Chroma(Platinum - cobalt) 15 15 30 <10
        Diethylamine content % 99.5 99.2 98.5 99.70
        Ethylamine content % 0.05 0.1 0.3 0.047
        Triethylamine content % 0.1 0.1 0.1 0.0010
        Ethanol content % 0.1 0.1 0.1 0.0062
        Moisture content % 0.1 0.2 0.4 0.052
        Test result: Pass GB/T23963-2009(High-class products)standard

        2-Ethyl-hexylamine

        Product Name: 2-ethyl-hexylamine
        Molecular Formula: C8H19N
        Molecular Weight: 129.24
        CAS RN: 104-75-6


        Properties: colorless oily transparent liquid with amine odor, easily soluble in alcohols, ethers, acetone etc. m.p.: -76C, b.p.: 169.2C, relative density: 0.7894 (20/20C), refractive index: 1.4300, flash point: 52C.

        Use: As intermediate of pesticide, dyes, surfactant etc.

         

        Spec.:
        Assay > 99%
        Moisture<0.2%
        Color<20# (APHA)

         

        Packing: 160kg/drum

        Sodium Nitrate

        Sodium Nitrate

        Molecular formula:NaNO3

        Molecular weight : 84.99

        Properties:.It is white crystal, rhombus crystal and white tiny powder. It iseasily soluble in water and aqueous ammonia ; while it is slightlydissolved in methanol, alcohol, and solvent ether. In addition, itshows strong hydroscopic property.

        Uses: it ismostly used in manufacturing nitro-compound, Potassium nitrate , azodyestuff, dye mordant in textile coloration, bleaching agent, metalheat treatment auxiliary agent, and antispetic in pharmaceuticalindustry

        Specification:

        Assay (on Dried basis): 99.% Min.

        Moisture: 1.5% Max.

        Water insoluble matter: 0.06% Max.

        Sodium Nitrite (NaNO2): 0.02% max.

        Chloride  (As Cl): 0.3% Max.

        Carbonate (As Na2CO3): 0.1% Max.

        Iron (As Fe): 0.005% Max.

        Yellow Phosphorus

        YEllow Phosphorus

        Molecular Formula: P4
        MW: 123.89
        Description: Like yellow wax.
        Another Name: White phosphorus, phosphorus.
        Usage:
                It can be used to make red phosphorus, phosphoric acid, phosphorus pentoxide, phosphorus dichloride, phosphorus pentasulfide, and other phosphorus compounds.
                It is the raw materials for organic phosphorus pesticide.
                It is used to make military signal bombs and smoke bombs.
                It is used in metallurgy, medicine and organic synthesis and so on.

        Packing: Metal pail net weight 200kg.

        Potassium Nitrite

        Potassium Nitrite

        Molecular formula: KNO2
        Molecular Weight: 85.11
        White or light yellow crystalline columnar turbot. Easy to deliquescence,
        Soluble in ammonia and water, aqueous solution was alkaline. Slightly soluble in alcohol, not the solution in acetone. At 350. C decomposition begin to generate potassium and release nitric oxide gas. Asia potassium nitrate as oxidant, toxic! With organic matter. Contact with combustible mixture to combustion and explosion, and release toxic and irritating the peroxy nitrogen and nitric oxide gas. Mixed with iron salts or cyanide explode.
        IMDG code GB5.1 category classification and 5107.

        Use
        Used as a reducing agent in organic synthesis. Food reagent, chemical reagent, can also be used in the manufacture of aniline dyes and azo dyes, medicine, metallurgy on drilling for nickel separation.
        Indicators of the name of a unit-specific level Commodities.

        NDC-8 Dehydrogenation Catalyst

        NDC-8 Dehydrogenation Catalyst

        Bulk Density:- g/cc
        Pt Content: 0.43%
        Size: 1.25-2.2 mm
        Comprehensives strength: 0.8-1.2kg/granule

        Specific Surface Ratio: 160 m2/ gr Max.

        Total Pore Volume: 1.0 ml/g min.

        Chlorine Content of Catalyst: 0.03%

        Dehydrogena Tion Conversion Ration: 12-13 %

        Dehydrogenation Selectivity: 90% min

        Catalyst life 6.5 MT Lab/kg Catalyst Min.


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