
API 7-1 Hwdp Heavy Weight Drill Pipe for Drilling Directional Drilling. API 7-1 Certified Quality: Strictly abides by API 7-1 and 7-2 standards with ISO9001 and HSE certifications. Custom Thread Processing: Accepts orders for double-shoulder threads and various non-standard special thread specifications. Full Drilling Tool Supply: Provides complete sets including drill pipes, bits, hammers, rigs, and mud pumps. Flexible Customization: Supports customized logo, packaging, and graphic design with a minimum order of 1 piece. Professional QC Inspection: 100% inspection including visual and function tests by professional QC team before shipping. Fast Delivery Time: Normal delivery within 10-15 days depending on purchasing quantity. 1-Year Warranty Coverage: Free replacement for quality issues and timely after-sale assistance provided.