6,500mm Integral Stainless Steel Heads
Delivering 6,500mm Integral Stainless Steel Heads for a Global Project Before Chinese New Year
Project Highlights
Product: Ultra-Large Diameter Stainless Steel Head Plates (Dished Ends)
Material: ASTM A240 Type 304 & 316L
Max Diameter: 6,500mm (6.5 Meters)
Key Requirement: 100% Integral Forming (No Segmentation Allowed)
Logistics Challenge: Oversized cargo transport requiring specialized wide-load vehicles.
Outcome: Successfully delivered to the project site just before the Chinese New Year holiday shutdown.
The Challenge: Massive Scale, Zero Compromise on Integrity
A major international client required a batch of stainless steel head plates with diameters reaching up to 6,500mm for a critical pressure vessel project. The specifications demanded high-grade 304 and 316L stainless steel to ensure corrosion resistance in harsh operating environments.
The project presented two significant hurdles:
Technical Constraint: Due to strict safety and integrity standards, the client rejected segmented (split) heads. They required one-piece integral forming, a rare capability for diameters exceeding 6 meters.
Logistical & Time Pressure: The delivery deadline fell just days before the Chinese New Year (CNY), a period when most Chinese factories and logistics networks shut down for 2-3 weeks. Furthermore, transporting a 6.5-meter wide object requires oversized cargo permits and specialized flatbed trailers, making last-minute shipping impossible.
The SUNLION Solution: Advanced Manufacturing & Strategic Logistics
SUNLION PIPING ENGINEERING CO., LTD. leveraged its advanced spinning capabilities and strategic planning to overcome these challenges.
1. Mastering Integral Forming at 6,500mm
Unlike many competitors who resort to welding segments together for large diameters, SUNLION utilized heavy-duty hydraulic spinning presses to form the 6,500mm heads as single pieces.
Quality Assurance: Eliminating onsite welds significantly reduces the risk of leakage and stress concentration, ensuring superior structural integrity for high-pressure applications.
Material Verification: All raw materials were sourced with full Mill Test Certificates (MTC) compliant with ASTM/EN standards, and final products underwent 100% RT (Radiographic Testing) and PT (Penetrant Testing).
2. Overcoming the "CNY Rush" with Specialized Logistics
Recognizing the tight window, SUNLION initiated the logistics plan weeks in advance.
Early Coordination: We partnered with a top-tier domestic logistics team specializing in out-of-gauge (OOG) cargo.
Route Survey & Permitting: Our team conducted pre-survey routes to identify bridge limits and road widths, securing all necessary oversized transport permits from local authorities before the holiday rush.
Execution: Dedicated wide-load vehicles were dispatched to our facility, ensuring the 6.5m heads were loaded securely and transported directly to the port/project site before the national holiday freeze.
The Result: On-Time Delivery, Zero Damage
Despite the dual pressures of extreme dimensions and the pre-holiday logistics bottleneck, SUNLION successfully delivered the entire batch on time.
100% Integral Delivery: All heads arrived as single-piece units, meeting the client's strict no-weld requirement.
Safe Arrival: The specialized securing methods ensured zero deformation or damage during transit.
Project Continuity: The early delivery allowed the client to proceed with installation before the global supply chain slowdown, avoiding costly project delays.
"This project tested our execution capabilities to the limit. By combining our in-house large-diameter forming technology with proactive logistics management, we proved that SUNLION is a reliable partner for even the most complex industrial challenges." — SUNLION Project Manager
Why Choose SUNLION for Large-Diameter Heads?
Rare Capacity: One of the few suppliers in China capable of integral forming up to 6,500mm+.
Logistics Expertise: Proven track record in handling oversized and heavy-lift cargo from factory to global destination.
Deadline Driven: Experienced in navigating Chinese holiday schedules to ensure uninterrupted supply chains.
Global Standards: Full compliance with ASME, EN, PED, and GB standards.
Need Ultra-Large Stainless Steel Heads?
Don't let size or logistics stop your project. Contact SUNLION PIPING ENGINEERING CO., LTD. today for a quote.
🌐 Website: www.sunlionsteel.com
📧 Email: bill@sunlionsteel.com
📱 WhatsApp/WeChat: 008617749705015
📍 Location: Shanghai/Wenzhou, China