http://www.skivingtubelw.com/piston-rod/ Salt spray test of hard chrome rod/ chrome cylinder rod Min 120 hours NSS Rating 9 Test acc.To ISO 9227 and ISO 10289 for the evaluation of the results Induction hardness 50-55HRC Induction layer 1.7-2.5mm ◆ Additional cutting costs for induction hardened bars ◆ Nickel-plated & chrome plated bars for special requests ◆ Certification: Mill test certificate acc.to EN10204 3.1 Varieties of chrome rod Specifications φ6 φ8 φ10 φ12 φ16 φ20 φ22 φ25 φ28 φ30 φ32 φ35 φ36 φ38/ φ40 φ45 φ50 φ55 φ60 φ65 φ70 φ75 φ80 φ85 φ90 φ100 φ105 φ110 φ120 φ125 φ130 φ140 φ150 φ160 φ170 φ180 φ200 φ220 φ250 φ300 φ350 φ400 φ450 φ500 φ550 φ600 φ650 φ700-1000 chrome rod technical parameters: Specifications Lenth Surface coarseness Surface Processing hardness Roundness tolerance Total-lenth allowance Hardness of tempered axle Supply status Linearity Chrome-plated thickness Material φ6-φ12 800-2000 Ra0.1-0.2 HRC55 Above GB1184 9级 17 GB1100 IT级 HB220-260 Surface not disposed, Surface chrome or nickel phosphorus 0.15/1000mm 0.02-0.03 45# 2Cr13 40Cr φ36-φ25 800-3000 φ90-φ50 800-5000 φ200-φ100 1000-7000 φ105-φ1000 1000-9000 Improvement of mounting method of hard chromium plating on piston rod: Hard chromium plating on medium and short piston rod is carried out by traditional method. It is easy to produce deviation on the grinding machine, which affects the service life. The piston rod of the new product is relatively long, and the uniformity of the coating thickness is high. It is required to directly plating the qualified uniform coating, not super thick, not grinding. After analysis and research, the horizontal rotary clamping chromium plating method was innovated. The uniform coating of the longer piston rod without local super thickness, taper and ellipticity was produced. Trict contract auditing invloved all departments to assure the feasibility of each order. Process design and validation before bulk production. Strictly control on all raw and auxiliary materials, All raw materials reach the world advanced level. On-site inspection to all processes, inspection record keep traceable for 3 years. FAQ: 1.Q: Which level of quality are your products? A: We have got ISO9000 quality system certification 2.Q: What is the delivery time of your machine? A: In general, the delivery time of our Steel pipe is about 30 days, 3.Q: How can i trust your company? A: We can offer you the right advice and the right price 1.Assessed by third party, national patents and CE, ISO for all equipment, . 2.Our steel tubes, we did very well, honing pipes, rolling tubes, thin walled pipes, etc. 4.Q: Is your price competitive? A: Only good quality Steel pipe we supply. Surely we will give you best factory price based on superior product and service. wholesale Piston Rods website:http://www.skivingtubelw.com/piston-rod/