China Carbon Steel Hex Bolt Nuts Washer

TypeCountryStandard NoProperty ClassThread SizeLarge hexagon head boltsJAPANJIS B 1186F10T/F8TM16~M30

Property ClassThread SizeMaterialTensile StrengthRockwell HardnessElongationContractionF8TM12≤d≤M2420MnTiB784.5 ~ 980.7
{113.8 ~ 142.3}18 ~ 311645M27≤d≤M3035VBF10TM12≤d≤M2420MnTiB980.7 ~ 1176.8
{142.3 ~ 170.7}27 ~ 381440M27≤d≤M3035VB

Thread Size (d)M12M16M20M22M24M27M30p1.7522.52.5333.5cmax0.80.80.80.80.80.80.8min0.40.40.40.40.40.40.4dsmax12.716.720.822.824.827.830.8min11.815.819.621.623.626.629.6dwmin20252933384347e~~25.431.23741.647.353.157.7knominal8101314151719max8.810.913.914.915.917.920min7.29.112.113.114.116.118smax22273236414650min21.226.23135404549bnominal25303540455055tolerance+5 / 0+5 / 0+6 / 0+6 / 0+6 / 0+6 / 0+6 / 0mmax12.3516.3520.422.424.427.430.4min11.6515.6519.621.623.626.619.6

BUSINESS INTRODUCTION
1. The specific products of our service are: the field of steel structure in the world. For example, thermal power steel structure, wind power steel structure, nuclear power steel structure, ocean engineering, chemical engineering, petroleum and equipment steel structure. H-beam, channel steel, angle steel, steel plate.etc will be used into these project. We are professional in the product & service of it and will provide the product & service to each customer and project.
2. Our business is service for engineering project. According to the customer's material list, we make clear the content and requirements of the purchase to the customer and settle the problem and difficulty occurred in the project. Usually we face the problem is the quantity of each size is very low. We can combine the source of mill & distributor to save the most cost for the customer. Its bases on the good relationship between us and our suppliers. For some situations, the delivery time is very urgent. We can provide the actual information to our customer and help them to choose whether they can accept and how they will do accordingly. If the quantity is huge, we can separate the whole list into several parts and choose different resource for the project. And we will provide the financal, purchase, fabrication, logistics and customs… help to each customer.
3. Our service procedure: We will confirm the content of the enquiry with our customer and then analyse the enquiry. Then we will quote at our soonest. If the customer confirm to purchase, we will make our run-book for each contract and define job content to ensure the smooth execution of the contract.
4. Quality control:
We have a system management of quantity control. We have a management document (Quality Management Control document) about the content of the cover information:
A. According to the agreement of the contract, it is the first condition.
B. The standard of technical conditions agreed upon in the contract must be clear and enforceable.
C. In the execution of the contract, we should have people to control the situation on the spot.
D. The products must be the same as which show on the documents.
E. The above contents are expressed and completed in the form of a management document (QMCD).