GEM Technic manufactures and supplies screws, barrels/cylinders, screw tips, endcaps, nozzles for Welltec injection molding machines, including F, F2, F2V, SE, SE II, SE III series.
Welltec injection screw diameter and barrel bore size:
23mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 80mm, 90mm, 94mm, 100mm, 110mm, 125mm, 135mm, 140mm, 145mm, 160mm, 180mm, 200mm

Welltec free flow screw tip assemblies:
30mm Welltec screw tip assemblies, 40 Degree Nose Angle, M14X1.5 LH Thread, H13/HT
30mm Welltec screw tip assemblies, 60 Degree Nose Angle, M14X1.5 LH Thread, H13/HT
35mm Welltec screw tip assemblies, 40 Degree Nose Angle, M14X1.5 LH Thread, H13/HT
35mm Welltec screw tip assemblies, 60 Degree Nose Angle, M16X1.5 LH Thread, H13/HT
40mm Welltec screw tip assemblies, 40 Degree Nose Angle, M20X2 LH Thread, H13/HT
40mm Welltec screw tip assemblies, 60 Degree Nose Angle, M20X2 LH Thread, H13/HT
45mm Welltec screw tip assemblies, 40 Degree Nose Angle, M20X2 LH Thread, H13/HT
45mm Welltec screw tip assemblies, 60 Degree Nose Angle, M20X2 LH Thread, H13/HT
50mm Welltec screw tip assemblies, 40 Degree Nose Angle, M24X2 LH Thread, H13/HT
50mm Welltec screw tip assemblies, 60 Degree Nose Angle, M24X2 LH Thread, H13/HT
55mm Welltec screw tip assemblies, 40 Degree Nose Angle, M27X2 LH Thread, H13/HT
55mm Welltec screw tip assemblies, 60 Degree Nose Angle, M27X2 LH Thread, H13/HT
60mm Welltec screw tip assemblies, 40 Degree Nose Angle, M27X2 LH Thread, H13/HT
60mm Welltec screw tip assemblies, 60 Degree Nose Angle, M27X2 LH Thread, H13/HT

Welltec TTI-160F (45mm)
F2 series:
Welltec TTI-130F2(40mm), Welltec TTI-190F2, Welltec TTI-260F2
Welltec TTI-100F2R
WELLTEC TTI-90F2V, Welltec TTI-130F2V
TTI-Se series:
Welltec TTI-90Se(35mm), Welltec TTI-130Se(40mm), Welltec TTI-160Se(45mm), Welltec TTI-190Se(50mm), Welltec TTI-260Se(50mm, 55mm), Welltec TTI-320Se(60mm), Welltec TTI-380Se(60mm, 70mm), Welltec TTI-450Se(80mm), Welltec TTI-500Se(80mm), Welltec TTI-560Se(90mm), Welltec TTI-660Se(90mm), Welltec TTI-750Se(90mm), Welltec TTI-900Se(110mm), Welltec TTI-1250Se(125mm), Welltec TTI-1500Se(135mm),  Welltec TTI-1800Se(145mm).
TTI-Se II series:
Welltec TTI-90Se II(35mm), Welltec TTI-130Se(40mm), Welltec TTI-160Se(45mm), Welltec TTI-190Se(50mm), Welltec TTI-260Se(50mm, 55mm), Welltec TTI-320Se(60mm), Welltec TTI-380Se(60mm, 70mm), Welltec TTI-450Se II(80mm), Welltec TTI-500Se(80mm), Welltec TTI-560Se(90mm), Welltec TTI-660Se(90mm), Welltec TTI-750Se(90mm), Welltec TTI-900Se(110mm), Welltec TTI-1250Se(125mm), Welltec TTI-1500Se(135mm),  Welltec TTI-1800Se(145mm).