Pvc steel railing coloring process roughly divided into black profile extrusion method, the composite co-extrusion, coating and surface coating bite. (1) black profile extrusion method, also known as whole body method. Intervention in PVC profile PVC fences fence masterbatch formulations, black profiles via direct extrusion extruder. Strengths is finished in the original extrusion extruder, low cost; downside is the profile of the poor weather, the outcome is difficult to meet room table decoration applications. (2) Co-extrusion method. By steel railings and pvc additional layer of black material composed of co-extrusion profiles. The black material either PVC, or poly (methyl methacrylate) acrylic big wish - styrene - acrylate copolymer (ASA), are required to host two extruders (conical twin pupae lever 60 or 58 and a single screw 30 ) to get. Students must apply to a composite profile of manufacturing molds, raw vocals are manufactured since past two consistent material flow channel profiles and black material in the mold before leaving late in the bus to the same class of common extrusion. Fu of this approach are: raw manufacturing process need to reprovision cold mixer or dryer and other equipment PVC lawn fence, material recovery difficult, burdensome raw vocals manufacture composite film with high cost, large investments. PVC Fence Lawn fence: (1) PVC fence fence green lawn, maintenance and upscale, beautiful, durable PVC, noble and modern atmosphere for the city, to add luster to the room, give you a new fashion concept. (2) PVC fence lawn fence installation is simple, fast, long life, but not much different than traditional guardrail on prices. PVC fences Fence | PVC | St. Ye metal (view) by Linqu St. Ye metallwarenfabrik. Linqu St. Ye metallwarenfabrik (www.shengyehl.com) provide customers with "zinc steel fence, galvanized fence, spray fence, cement fence" and other services, the company has "Ye Holy fence" and other brands. Focused on metal building materials industries, have higher visibility in Weifang, Shandong. Welcomes inquiries, contact: Zhaoxiang Wang.