20mm to 300mm diameter screw and barrel assembly

{"cid":"91222495","title":"38CrMoAlA Alloy Single Screw Extruder Screw Barrel with 0.015mm Straightness for 20mm to 300mm Diameter Precision Extrusion","imgUrl":"https:\/\/img.chinax.com\/nimg\/c8\/8d\/43edc2c7a043244180e05a094917-200x200-1.jpg","attrs":{"Price":"USD $1500\/set - USD $4500\/set","Brand Name":"Jialong","Minimum Order Quantity":"1 Set","Delivery Time":"1-35 Work Days","Payment Terms":"T\/T","Place Of Origin":"China","Operating temperature":"Up To 300\u00b0C","Packaging Details":"Woodern Package","Bimetallic Hardness":"HRC58-65","Supply Ability":"300 Piece\/Pieces Per Month","Barrel Straightness":"0.015mm","Barrel Diameter":"40mm-300mm","Screw Material":"38CrMoAlA","Cooling method":"Water-cooled Or Air-cooled","Screw Straightness":"0.015mm","Surface Treatment":"Nitriding","Certification":"ISO9001"}}

{"cid":"91189943","title":"Alloy Steel Screw and Barrel 50-300mm Diameter","imgUrl":"https:\/\/img.chinax.com\/nimg\/e1\/2d\/8fd0dc183d4ac77cf49e8c82efef-200x200-1.jpg","attrs":{"Brand Name":" barrels for twin screw extruder ","Model Number":"150 barrel ","Place of Origin":"CHINA","roughness":"Ra0.4","material":"Alloy Steel","barrelType":"Segmented","barrelSurface":"Nitriding Treatment","barrelCooling":"Water Cooling","barrelDiameter":"300mm","barrelLiner":"Alloy Steel","hardness":"HRC50-55"}}