Boom Elbows price 1.PART NUMBER Double layer extension elbow 2.DESCRIPTION EXTENSION DOUBLE LAYER BEND FOR CONCRETE PUMP DN125,SK5.5鈥?R275-90掳+100 3.GENUINE PARTS CAN BE PUMPING UP TO 50000m鲁CONCRETE UPPER AND LOWER TWO PARTS, DIFFERENT PART USE DIFFERENT MATERIALS ABRASION-PROOF INTERNAL LAYER AND BREAKAGE-PROOF EXTERNAL LAYER ACCORDING CONCRETE FLOW DIRECTION AND WEAR POSITION, STRENGTHEN ARCH PART, THICKENING GRADUALLY FROM BOTH ENDS TO THE MIDDLE HIGH- CHROMIUM IRON WEAR SLEEVES (HRC63) BAKING PAINTING锛孭AINTING COLOUR CUSTOMIZATION AVAILABLEBoom Elbows price