High-Torque OCTG Drill Pipe, 135ksi Yield Strength for Extended Reach Wells. High Yield Strength: 135ksi yield strength designed for extended reach wells and high-pressure environments. Wide Grade Selection: Available in H40, J55, K55, N80, L80, C90, T95, P110, and Q125 grades. Customizable Dimensions: OD ranges from 60.3mm to 168.3mm with customizable wall thickness and length. Strict Quality Control: Inspections available upon customer request with certification provided. Fast Delivery: Standard delivery within 7-25 days; special cases can be completed in two weeks. Sample Availability: Samples can be provided upon request to ensure product quality before bulk order. Competitive Pricing: Reasonable prices with discounts available for different order quantities. Proven Track Record: Over 10 years of experience cooperating with major oil & gas companies like Shell and Lukoil.