Casing

API Series DLP Series Oil and Gas Pipeline

DLP Series

Casing

Casing

Scope of production：

Outer diameter(D)： 114.30 mm ～508.00 mm

wall thickness(S)：5.21 mm ～16.13 mm

Varieties	Specifications		Grade			Thread type	Typical uses
	Outside diameter	wall thickness
Anti-collapse Casing Series	114.3~244.5	5.0~20	80T(TT) 90T(TT) 95T(TT) 110T(TT) 125T(TT)			S/L/B/	Used in complex geological conditions such as rock salt beds, deep wells, etc.
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4
Anti-H2S Casing Series	114.3~244.5	5.0~20	80S 80SS C90-PSL3 90S 90SS T95-PSL3 95S 95SS			S/L/B/	Used in environments containing H2S
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4
anti-H2S and collapse Casing Series	114.3~244.5	5.0~20	80ST(SSTT) 90ST(SSTT) 95ST(SSTT)			S/L/B/	Used in complex geological conditions such as rock salt beds, deep wells and hydrogen sulfide-containing environment
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4
thermal well casing Series	114.3~244.5	5.0~20	70H 80H 90H 100H 110H			S/L/B/	Used in heavy oil thermal recovery environment
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4
Anti CO2 and H2S Casing Series	114.3~244.5	5.0~20	3Cr-95S 3Cr-110S			S/L/B/	Used in environments containing H2S and CO2
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4
Anti CO2 Casing Series	114.3~244.5	5.0~20	3Cr-L80-1 3Cr-C90 3Cr-P100			S/L/B/	Used in environments containing CO2
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4
High Strength and High Toughness Casing	139.7	7.72~10.54	125V 140V			S/L/B/	Used in deep wells、Ultra-deep well
						DLP-T1
						DLP-T2
						DLP-T3
						DLP-T4