Hot selling heavy duty truck trailer suspension Z type leaf spring
Specifications
1. Integral high-quality low alloy shaft tube, high load capacity, high bending strength.
2. The whole quenched and tempered and induction hardening optimization, high-precision machining finished, some products after tempering and then processing to improve accuracy
规格
1.More than 10 years experience in semi trailer production.
2.Reliable quality.
3.Perfect pre-sale and after - sale service.
4.Accept customized products.
Single piece leaf spring hardness need to be HB378-445 after heat treatment;
Overheating, overburning, cracking, folding, bruising and other defects are not allowed on surface;
Each sinlgle leaf spring need to do stress shot peening treatmnet;
After the spring assembling, the center bolt must be punched and riveted;
Bolt mechanical performance level: 8.8-GB3098.1-2000;
The surface defects of bolts shall be implemented according to GB5779.1-2000;
Tolerance of bolts is according to GB3103.1-1982 Grade B product ;
The spring assembly is painted with black paint or as requested, according to QC / T484-TQ9;
Other technical requirements shall be implemented according to GB / 19844-2005.
Thickness : From 6 mm to 50 mm
Width: From 45mm to 152mm
Color: shinning black,dark black,grey,blue follow your requirement
Materials: SUP7, SUP9, SUP9A, SUP10, SUP11, SUP11A, 60Si2Mn, 55CrMnA and 50CrVA are available
Certificate: TS16949;ISO9001; GB/T 19001-2008
Lead time: within 30-45days after receiving orders
Do you provide the sample before order made?
we’re glad to provide sample for testing before mass production.
What’s your payment methods?
Accept payment via T/T(Bank transfer), Western Union, and PayPal.
L/C is Ok when we keep Long-term stable cooperative relationship.
How long is your production time?
2 working days for some products in stock .
15 working days for most of goods.
5 weeks for bulk order.
All goods will test quality and size before package and shipping.
What’s your shipping way?
By sea, by air, by train all is available, depend on you.
We choose direct shipping, so can be one week earlier than others.
Is it possible to customization for special orders?
Yes. Customized service could be provided based on the design pictures or drawings.
