Origin	China
Model Number	SI
Brand Name	BDL

Beiduolu Pneumatic Component Co., Ltd. located in the national 4A level scenic spot Mid-YanDang Mountain.Our company specializes in producing aluminum alloy cylinders with honing polished inside walls. Our products include various type including round,profile,thin,on-off,double holes and three holes as well as producing in accordance with clients designs and drawings.

We have three anodic oxidation production lines which provide the colors of appearance with objective oxidation, bronze and sandblast. Our products with hard and smooth inside walls are durable and beautiful, having won praise from lots of clients.The technical specifications of our products are as follows:

Internal diameter:16mm~250mm

Tolerance of internal diameter:H9~H11

Surface roughness of internal diameter:Ra≤0.4

Tolorance of deviation from straightness:1mm/m

Hardness of surface oxidation:100HV~45HV

Film thickness of inside and outside wall:10μm~45μm

LD31-RCS(6063-T5) Chemistry composition:

Cu    Si       Mg      Fe     Mn     Zn     Cr     Ti

<0.1  0.2-0.6  0.45-0.9   <0.35   <0.1    <0.1   <0.1   <0.1

“Not the biggest but the best”is our goal.We sincerely welcome personalities of various circles to supervise and direct us.