1. Description
Slot and perforate on the pipe body to be slotted pipes. The types of slot are Perforated, Rectangular slotted, Trapezoid slotted, Bridge slotted, Wire wrapped screen, Mechanical cutting, Compound slotted pipe.
The slotted pipe is using in oil exploration to prevent sand, decrease oil well repaired, increase oil well's strength, integrality and stability of keeping off sand.

2. Casing Slotted Pipe Product Specification:
O.D.: Casing: 4 1/2?-20? (114.3mm-508mm)
Tubing:1.05?-41/2?(26.7mm-114.3m)
Length:
R1:4.88m-7.62m
R2:7.621m-10.36m 
R3:10.36m-14.63m
W.T.: 0.205" – 0.875" (5.21mm- 22.22mm)
Product standards: API 5CT, BS EN ISO11960, NFM87-207, JIS G3439, ISO 4270, GOST 632-80
Material: H40, J55, K55, N80-1, N80Q, R95, L80-1, L80-9Cr, L80-13Cr, C90, T95, C110, P110, Q125, V150

3. Thread Type:
Casing: STC, LTC, BTC, OTTM, OTTG, BTO, NEW VAM, VAM TOP, VAM FJL, VAM ACE, FOX, Hydril, Hunting etc.
Tubing: NU, EU, XL, PH-4, PH-6, LTC, STC, BTC, NEW VAM, VAM TOP, VAM FJL, VAM ACE etc.

4. Slotted Type
Perforated, Rectangular slotted, Trapezoid slotted, Bridge slotted, Wire wrapped screen, Mechanical cutting, Compound slotted pipe.

5. Assurance
API/ISO quality system, SGS, DNV, BV, Moody third party inspection welcomed