? ? Product Description ? ?

Material:	60Si2Mn?and?55CrSi?for?option.?Their?chemical?compostions?are?below:
?	60Si2Mn	55CrSi
?	C:???0.56-0.64	C:???0.5-0.6
?	Si:?1.5-2.0	Si:?1.2-1.6
?	Mn:?0.60-0.90	Mn:?0.5-0.8
?	Ni?≤0.35	Cr:?0.5-0.8
?	Cr?≤0.35	P?≤0.03
?	P≤?0.035	S?≤0.03
?	S?≤0.035	Cu≤?0.02
?	Cu?≤0.25	?
Certificate	GB/T 19001-2008/ ISO9001-2008 ? ISO/TS 16949:2009?
Inspection?	Fatigue?test
Color:	as?required
MOQ:	100pcs?each?reference?number?and?500pcs?each?order

Packaging & Shipping ?

Packaging:	soft?foam,?neutral?carton?and?pallet;?also?as?required
Quantity:	20GP?can?hold?about?2200pcs?and?40GP?can?hold?about?4000pcs.
Payment?Terms:	a)?T/T???????b)?L/C?????c)?Western?Union
Lead?Time:	5-25?days
Port?of?Loading:	TIANJIN?/?NINGBO?/GUANGZHOU?

? Our Services ? 1.?Customized?design?is?available;?OEM?&?ODM?are?welcome; 2.?Exclusive?&?unique?solution?can?be?provided?by?our?well-trained?and?professional?engineers; 3.?Special?discount?can?be?offered?with?large?quantity; 4.?We?will?try?our?best?to?meet?your?requirements?and?supply?you?best?quality?auto?coil?springs?for?suspension?system. 5.200 workers,28 special ?technicians and 3 senior engineers. 40 000 square meters non-dust workshop,35 years production experience,6 years export experience, ISO certificated, one hour reach Tianjing port, this is how we keep good quality and reliable cooperation for global customers. 6. We?mainly?supply?to?global?importer?and?wholesaler,?our suspension coil springs used?in?automotive with?ISO9001:2008 standard
? Company Information We?are?a?leading?MANUFACTURER?of?AOTUMOBILE SPRINGS AND HYDRAULIC PROP PARTS FOR COAL MINES? ?products?established?in?1980. 1980 The board chaiman started the processing of suspension coil spring at a state-run factory at the?early period of reform and opening-up 1989 The board chairman started by himself a workshop to produce spring when the?factory disintegrated 1997 Established “Shizhuang spring factory” 2002 Becoming designated producer for the protected product of the coal mine of?China;“Heng Tonh Spring Shock Absorber Co. Ltd.”was established at Balipu, east to?Yutian, covering 20,000m2 2003 Certified into ISO9001international management system 2006 Becoming member of Spring Association of China General Manchine?Components Industry Association (CMCA) 2008 Winning title of “Quality, Service and Credibility”AAA enterprise awarded by ChinaMid-light Product Quality Guarantee Center?Moving to Xingyu Industrial Park at Yutian County, covering 40,000m2 2009 Establish officially Foreign Trade Department of Heng Tong Co. 2011 Export to USA, Great Britain 2012 Certified into CCCI , GB/T19001-2008/ISO9001:2008 2013 Export to Malasia, Dubai, Ukrain, ASEAN, Euro-American market FAQ ? Should?I?check?the?wheel?alignment?on?my?vehicle?after?replacing?the?springs? Yes,?we?always?recommend?checking?the?wheel?alignment?after?replacing?a?spring?to?avoid?any?unnecessary?tyre?wear. I?am?going?to?mount?a?Hengtong?spring?and?the?diameter?at?both?ends?is?the?same,?but?the?spring?is?more?closely?coiled?at?one?end.?Which?end?should?be?up?and?which?one?down? The?performance?of?the?spring?will?be?the?same?whichever?way?it?is?mounted,?however?we?always?recommend?springs?are?installed?with?the?more?closely?coiled?end?to?the?top?to?avoid?road?debris,?e.g.?gravel,?getting?between?the?tighter?coils. Why?do?you?recommend?replacing?springs?in?pairs,?although?it?might?be?only?one?spring?broken? When?only?1?spring?is?replaced?across?an?axle,?the?life?expectancy?of?the?other?spring?will?decrease?and?the?car?may?be?imbalanced.?Failure?to?replace?springs?in?axle?pairs?can?lead?to?an?uneven?ride?height,?less?responsive?steering,?less?secure?road?holding,?increased?braking?distance,?increased?tyre?wear?and?increased?fuel?consumption. ? ? Our factory ? ? ? ? ?? ? ? ? ? ? ? ? ? ? Spring type Explanation?for?spring?design C??=??Cylindrical?end U??=??Widened?end I??=??Pigtail?end K??=??Conical?spring Coil?Spring?Manufacturing ? ? ? ? ? Contact information ? Yutian Hengtong Spring Shock Absorber Co.,Ltd Address:Xingyu Industrial Park Region of Yutian County of Tangshan, Hebei Province , P.R.C Tel: +86-315-6106835? Fax: +86-315-6162286 Skype:hengtongth07? QQ:3215762938 Web:? http://www.facebook.com/htautospring E-mail:fanfan(at)zghtth.cn ? ? ?