Double Bollard

GBT554-2008 Marine Double Bollard Type A – Chinese Standard Mooring Excellence

Engineered for Secure Vessel Mooring

Our GBT554-2008 Type A Marine Double Bollard is a precision-engineered mooring solution that meets rigorous Chinese national standards. Designed for ports and marine facilities, this robust bollard delivers exceptional load-bearing capacity and long-term durability in harsh marine environments.

Key Features & Benefits

✔ Heavy-Duty Construction

Cast iron or cast steel for maximum strength
Nominal diameters: 100mm–800mm (custom sizes available)
Load capacity: 20kN–800kN (scalable to vessel requirements)

✔ Standard-Compliant Design

Precision dimensions for compatibility with mooring ropes
Optimized bollard head angle for secure line retention
Mounting hole specifications ensure easy installation

✔ Rigorous Quality Assurance

Proof load tested to verify strength
Hardness tested for material integrity
Visual inspection to ensure defect-free manufacturing

✔ Versatile Applications

Commercial ports & harbors
Shipyards & docking facilities
Offshore platforms

Technical Specifications

Feature	Specification
Standard	GBT554-2008 (China National Standard)
Type	Type A (Single Bitt)
Material	Cast Iron / Cast Steel
Diameter Range	100mm–800mm
Load Capacity	20kN–800kN
Surface Treatment	Anti-corrosion coating

Parameters:

Nomianal	Pillar									SWL
size	D	D1	h1	h2	H	H1	t	t1	t2	(KN)
100	114	145	40	6	196	150	10	6	7	29
125	140	180	50	6	246	190	10	6	8	39
160	168	210	60	8	316	250	10	6	9	49
200	219	270	70	8	378	300	10	8	9	78
250	273	335	80	8	470	380	11	10	9	118
315	325	390	105	10	597	480	15	12	9	196
355	351	420	120	10	663	530	17	13	12	255
400	402	480	135	10	749	600	18	14	12	314
450	450	545	145	10	841	680	19	16	12	382
500	508	610	160	12	928	750	20	18	12	451
560	560	670	175	12	1025	830	22	20	12	549
630	610	730	190	12	1152	940	24	22	12	686
710	712	840	220	14	1294	1050	25	24	12	804
800	813	940	255	14	1480	1200	26	25	12	981