12.9 Grade 40Cr Plow Bolt and Nut 4J9208/2J3507 for Excavator Spare Parts

1. Our Features

• Through professional quench-tempering processes to guarantee excellent mechanical properties, high strength and superior wear resistance to avoid bending and breakage.
• 100% quality assurance, develop and manufacture follow or even exceed original ones.35 years' experience in Excavator & Bulldozer spare parts manufacturing.
• Our quality control is strictly performed from sourcing raw materials and different machining procession to final packing. 
• We can produce any requested parts according to your blue print or samples.

2. Structure and Main Dimensions

3. Quality Detection

Metallic Phase Diagram

Surface: tempered sorbite and little free ferrite Grade 2.

Inner:  tempered sorbite and little free ferrite Grade 2.

4. Our Advantages

• World-class quality
• Factory sale directly with reasonable price
• Custom-made products are available
• 35 years' experience in Excavator & Bulldozer spare parts manufacturing
• Flexible payment terms including T/T,L/C and so on
• Fast delivery within 30 days after contract established
• Professional sales team,quality inspection and report, maritime logistics guidance
• After-sale services:video technical support, 24h online support

5. Positive Customers Feedback