• Model NO.：4247.17
• Classification：Drum
• Drum Brakes Classification：Brake Drum
• Main Market：South America, North America, Eastern Europe, Mild East, Africa, Western Europe
• Height：70.5mm
• Inner Brake Drum Height：56mm
• No. of Holes：4
• Diameter：255mm
• Center Diameter：93mm
• Transport Package：Neutral Packing
• Specification：CE, SGS, ISO, TS16949
• Trademark：Pujie
• Origin：Qingdao, China
• HS Code：870830990
• Production Capacity：500, 000 PCS,Year

Cast iron CHEMICAL COMPOSITION(mass%) CSIMnNiCrMoCuSPSnTiV% MIN3.651.60.4/0.15/0.3/////% MAX3.82.10.80.10.350.250.60.150.10.150.050.05MICROSTRUCTUREMATRIXType of matrixFine LamellarPermissible limit  5% Max, well distributedLedebutiteNot permissibleGRAPHITE (To UNI EN ISO 945)Shape∣Distribution A: 70% MIND·E:<4% DisporsedB: Resto/RemainderSize3- 4 -5 : 70% MIN2: Traces6:≤15%Cementite and free carbidesTraces up pt 1% MAX permissibleMECHANICAL PROPERTIES OF CASTINGHARDNESS (HBW)On machined braking surfaces170~210On braking surfaces as-cast (0.5 mm below surface)230MAXTENSILE STRENGTH(Rm) (N/m²)On braking surface170 MINOn mounting flangeWEDGE INDENTATION STRENGTH (Rmk)(N/m²)On braking surface125 MINYoung's MODULUS (E) (N/m²)/95PHYSICAL PROPERITIES  (Indicative values)Density  (volumic mass)7.1 kg/dm³Coefficient of thermal expansion at 20 degree 9.10 1/KThermal conductivity at 100 degree50 W/Mk


2. About us :

Qingdao Pujie Industry Co., Ltd. is a worldwide leader, specializing in disc brake pads and shoes,brake discs and drums for all makes and models of passenger and commercial vehicles. PUJIE continuously strives for high level of customer satisfaction, by maintaining high quality raw material, advance production technology and fast delivery.
   PUJIE products are manufactured under ISO/TS 16949 & ISO 9001 certifications to ensure the highest level of quality.

3. Our Strength  :

1.  Wide range of brake parts :

We can supply you a geart variety of brake parts , such brake shoes, brake rotors , brake discs and so forth . You name the O.E. No. , we can give you what you need for sure .

2. Better price :

This is our customers cares most . And I believe you care the question ,too . What I can assure you is that we can save you 10% of your production line , both domestically or any other circumstance .

3. Top service : 

We can cope with all the circumstances that we encounter and can fix the problem immediately . Our team are all have expertise knowledge . With that , I think there is nothing to worry about .

 4. Factory pictures :