Qbh 15+ Years 300+ Furniture Industrial Steel Structure Construction Bridge Railway Ship Solar Panel Building Material Boat Automotive Auto Fastener Hardware

Product DescriptionThe company mainly produces high-strength fasteners business, bolts and nuts are the main, the mainstandard are DIN/ANSIASME/JIS/UNI/ISO/AS/BS/GB and so on. The product massively applies in thebridge oad he petroleum pipeline facility he wind power generation and steel structure project.Carbon steel bolts mainly have 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, nuts mainly have 4, 6, 8, 10, the mainmaterial of stainless steel fastener is 201��.dimensions in mmThread dM5M6M8M10M12M16M20SupplierQBHP0,811,251,51,7522,5bl < 125mm16182226303846125 < l < 200mm22242832364452l > 200mm--4145495765dkmax.13,5516,5520,6524,6530,6538,846,8min.12,4515,4519,3523,3529,3537,245,2dsmax.56810121620min.4,525,527,429,4211,315,319,16fmax.4,14,65,66,68,7512,915,9min.2,93,44,45,47,2511,114,1kmax.3,33,884,885,386,958,9511,05min.2,73,124,124,626,058,059,95r1approx.10,712,61619,224,129,333,9r2max.0,50,50,50,5111r3max.0,750,91,21,51,82,43vmax.5,486,488,5810,5812,716,720,84min.4,525,527,429,4211,315,319,16DimensionsNom. Dia. (d)M6M8M10M12M16M20SupplierQBHThread Pitch11.251.51.7522.5Thread Length (b)L < 125mm182226303846125-200mm242832364452L > 200mm-4145495765dkMax.16.5520.6524.6530.6538.846.8fMax.4.65.66.68.7512.915.9kMax.3.884.885.386.958.9511.05vMax.6.488.5810.5812.716.720.84LWEIGHT IN KG/1000 PCS166.90     207.6013.8022.70   258.5015.4025.20   309.6017.0027.7045.70  3510.7019.0030.2049.40  4011.8021.0032.7053.10  4512.9023.0035.8056.80  5014.0025.0038.9061.20119.00 5515.1026.9042.0065.60126.00 6016.2028.9045.1070.00133.00 6517.3030.9048.2074.40141.00 7018.4032.9051.3078.80149.00247.008020.6036.8057.5087.00165.00272.009022.8040.8063.7096.00181.00297.0010025.0044.8069.90105.00197.00322.0011027.2048.8076.10114.00213.00347.0012029.4052.8082.30123.00229.00372.0013031.6056.8088.50132.00245.00397.0014032.8060.8095.00141.00261.00422.0015035.0064.80101.00150.00277.00447.00160  107.00159.00293.00497.00180  119.00177.00325.00547.00200  131.00195.00357.00597.00Class4.8 Class5.8 Class6.8 Class8.8 Class10.9 Class12.9NO.Mechanical orphysical propertyProperty class 4.64.85.65.86.88.89.810.912.9/12.9 D≤16mmad>16mmbd≤16mm SupplierQBH 1Tensile strengthRm,Mpanom.c40050060080090010001200 max.40042050052060080083090010401220 2Lower yield strengthReL,Mpanom.c240--300-------------- max.240--300-------------- 3Stress at 0,2 % nonproportional elongationRp0.2,Mpanom.c----------6406407209001080 max.----------6406607209401100 4Stress at 0,0048 d non-proportional elongation forfull-size fastenersRpf,Mpanom.c--320--400480---------- max.--340e--420e480e---------- 5Stress under proof loadSpf,Mpanom.225310280380440580600650830970 Proof Sp,nom/ReL min Orstrength Sp,nom/Rp0.2min Orrati Sp,nom/Rpf min0.940.910.930.90.920.910.910.90.880.88 6Percentage elongationafter fracture formachined test pieces,A,%min.22--20----12121098 7Percentage reduction of area afterfracture for machined test pieces,Z,%min.--52484844 8Elongation after fracture for full-sizefasteners,Afmin.--0.24--0.220.2---------- 9Head soundnessNo fracture 10Vickers hardness, HV,F≥98Nmin.120130155160190250255290320385 max.220g250320335360380435 11Brinell hardness, HBW,F=30D²min.114124147152181238242276304366 max.209g238304318342361414 SupplierQBH 12Rockwell hardness,HRB ,HRBmin.6771798289  max.95g99.5  Rockwell hardness,HRCmin.--2223283239 max.--3234373944 13Surface hardnessHV 0.3max.--hh,jh,j 14Height of non-decarburized thread zone,E,mmmin.--1/2H12/3H13/4H1 Depth of complete decarburization in the thread,G,mmmax.--0.015 15Reduction of hardness after retempering,HVmax.--20 16Breaking torque,MB,N·mmin.--in accordance with ISO 898-7 17Impact strength,KVK,I,Jmin.--27--27272727m 18Surface integrity in accordance withISO 6157-1nISO 6157-3 a Values do not apply for structural bolting.b For structural bolting d W M12.c Nominal values are specified only for the purpose of the designation system for property classes.See Clause 5.d In cases where the lower yield strength ReL cannot be determined, it is permissible to measure the stress at 0,2 % non-proportional elongation Rp0,2.e For the property classes 4.8, 5.8 and 6.8 the values for Rpf min are under investigation. The present values are given for calculation of the proof stress ratio only. They are not test values.f Proof loads are specified in Tables 5 and 7.g Hardness determined at the end of a fastener shall be 250 HV, 238 HB or 99,5 HRB maximum.h Surface hardness shall not be more than 30 Vickers points above the measured core hardness of the fastener when determination of both surface hardness and core hardness are carried out with HV 0,3.i Any increase in hardness at the surface which indicates that the surface hardness exceeds 390 HV is not acceptable.j Any increase in hardness at the surface which indicates that the surface hardness exceeds 435 HV is not acceptable.k Values are determined at a test temperature of −20 °C, see 9.14.l Applies to d W 16 mm. m Value for KV is under investigation.n Instead of ISO 6157-1, ISO 6157-3 may apply by