Seal your pipe systems with confidence using our 4-inch Carbon Steel Standard Weld Cap. Manufactured from high-quality carbon steel, this durable weld cap is engineered to provide a secure, leak-proof closure for the end of your piping line.

Designed to meet industry-standard specifications (STD WPB), it’s ideal for high-pressure applications in commercial, industrial, and structural settings. The smooth interior finish allows for clean welds, while the robust construction ensures long-term performance in even the toughest environments.

Key Features:

• Size: 4-inch nominal pipe size
• Material: Carbon Steel (ASTM A234 WPB)
• Type: Standard weight
• End: Butt weld
• Finish: Black coating for corrosion resistance
• Application: Ideal for capping unused piping ends, pressure testing, and line terminations

Common Uses:
Oil & gas, plumbing, waterworks, HVAC systems, structural fabrication, and more.